1043728965 has 12 divisors (see below), whose sum is σ = 1809130284. Its totient is φ = 556655424.

The previous prime is 1043728963. The next prime is 1043728969. The reversal of 1043728965 is 5698273401.

1043728965 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 833072769 + 210656196 = 28863^2 + 14514^2 .

It is not a de Polignac number, because 1043728965 - 2¹ = 1043728963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 23193977 = 1043728965 / (1 + 0 + 4 + 3 + 7 + 2 + 8 + 9 + 6 + 5).

1043728965 is strictly pandigital in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1043728965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043728963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11596944 + ... + 11597033.

It is an arithmetic number, because the mean of its divisors is an integer number (150760857).

It is a 1-persistent number, because it is pandigital, but 2⋅1043728965 = 2087457930 is not.

Almost surely, 2^1043728965 is an apocalyptic number.

1043728965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1043728965 is a deficient number, since it is larger than the sum of its proper divisors (765401319).

1043728965 is a wasteful number, since it uses less digits than its factorization.

1043728965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23193988 (or 23193985 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1043728965 is about 32306.7944092261. The cubic root of 1043728965 is about 1014.3688684010.

The spelling of 1043728965 in words is "one billion, forty-three million, seven hundred twenty-eight thousand, nine hundred sixty-five".