1056365387 has 16 divisors (see below), whose sum is σ = 1319756544. Its totient is φ = 821436000.

The previous prime is 1056365357. The next prime is 1056365399. The reversal of 1056365387 is 7835636501.

It is not a de Polignac number, because 1056365387 - 2⁸ = 1056365131 is a prime.

It is a super-2 number, since 2×1056365387² = 2231815661703319538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056365357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23837 + ... + 51777.

It is an arithmetic number, because the mean of its divisors is an integer number (82484784).

Almost surely, 2^1056365387 is an apocalyptic number.

1056365387 is a deficient number, since it is larger than the sum of its proper divisors (263391157).

1056365387 is a wasteful number, since it uses less digits than its factorization.

1056365387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28450.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 1056365387 is about 32501.7751361368. The cubic root of 1056365387 is about 1018.4461111644.

The spelling of 1056365387 in words is "one billion, fifty-six million, three hundred sixty-five thousand, three hundred eighty-seven".