1056617889 has 8 divisors (see below), whose sum is σ = 1414023552. Its totient is φ = 701812080.

The previous prime is 1056617839. The next prime is 1056617899. The reversal of 1056617889 is 9887166501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1056617889 - 2¹² = 1056613793 is a prime.

It is a super-2 number, since 2×1056617889² = 2232882726709632642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056617839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649014 + ... + 650639.

It is an arithmetic number, because the mean of its divisors is an integer number (176752944).

Almost surely, 2^1056617889 is an apocalyptic number.

It is an amenable number.

1056617889 is a deficient number, since it is larger than the sum of its proper divisors (357405663).

1056617889 is a wasteful number, since it uses less digits than its factorization.

1056617889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299927.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 1056617889 is about 32505.6593380291. The cubic root of 1056617889 is about 1018.5272507638.

The spelling of 1056617889 in words is "one billion, fifty-six million, six hundred seventeen thousand, eight hundred eighty-nine".