1078423965 has 24 divisors (see below), whose sum is σ = 1887783768. Its totient is φ = 569462400.

The previous prime is 1078423921. The next prime is 1078423967. The reversal of 1078423965 is 5693248701.

1078423965 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 4 ways, for example, as 112084569 + 966339396 = 10587^2 + 31086^2 .

It is not a de Polignac number, because 1078423965 - 2⁷ = 1078423837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

1078423965 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 1078423965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078423967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114094 + ... + 123183.

It is an arithmetic number, because the mean of its divisors is an integer number (78657657).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1078423965 = 2156847930, but 3⋅1078423965 = 3235271895 is not.

Almost surely, 2^1078423965 is an apocalyptic number.

1078423965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1078423965 is a deficient number, since it is larger than the sum of its proper divisors (809359803).

1078423965 is a wasteful number, since it uses less digits than its factorization.

1078423965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237389 (or 237386 counting only the distinct ones).

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

The square root of 1078423965 is about 32839.3660870608. The cubic root of 1078423965 is about 1025.4862543159.

The spelling of 1078423965 in words is "one billion, seventy-eight million, four hundred twenty-three thousand, nine hundred sixty-five".