1043665137 has 12 divisors (see below), whose sum is σ = 1559500020. Its totient is φ = 671784288.

The previous prime is 1043665111. The next prime is 1043665151. The reversal of 1043665137 is 7315663401.

1043665137 is a `hidden beast` number, since 104 + 36 + 6 + 513 + 7 = 666.

1043665137 is digitally balanced in base 2, 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 273935601 + 769729536 = 16551^2 + 27744^2 .

It is not a de Polignac number, because 1043665137 - 2²² = 1039470833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1043667137) 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, 1999098 + ... + 1999619.

It is an arithmetic number, because the mean of its divisors is an integer number (129958335).

Almost surely, 2^1043665137 is an apocalyptic number.

It is an amenable number.

1043665137 is a deficient number, since it is larger than the sum of its proper divisors (515834883).

1043665137 is a wasteful number, since it uses less digits than its factorization.

1043665137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998752 (or 3998749 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1043665137 is about 32305.8065523831. The cubic root of 1043665137 is about 1014.3481904734.

The spelling of 1043665137 in words is "one billion, forty-three million, six hundred sixty-five thousand, one hundred thirty-seven".