1056656869 has 12 divisors (see below), whose sum is σ = 1110866400. Its totient is φ = 1004978744.

The previous prime is 1056656863. The next prime is 1056656897. The reversal of 1056656869 is 9686566501.

It is not a de Polignac number, because 1056656869 - 2⁹ = 1056656357 is a prime.

It is a super-2 number, since 2×1056656869² = 2233047477609766322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056656863) 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, 89112 + ... + 100270.

It is an arithmetic number, because the mean of its divisors is an integer number (92572200).

Almost surely, 2^1056656869 is an apocalyptic number.

It is an amenable number.

1056656869 is a deficient number, since it is larger than the sum of its proper divisors (54209531).

1056656869 is a wasteful number, since it uses less digits than its factorization.

1056656869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384 (or 11361 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The square root of 1056656869 is about 32506.2589203987. The cubic root of 1056656869 is about 1018.5397755388.

The spelling of 1056656869 in words is "one billion, fifty-six million, six hundred fifty-six thousand, eight hundred sixty-nine".