1655639056 has 20 divisors (see below), whose sum is σ = 3233062912. Its totient is φ = 821300256.

The previous prime is 1655639033. The next prime is 1655639057. The reversal of 1655639056 is 6509365561.

It is a super-2 number, since 2×1655639056² = 5482281367505142272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1655638997 and 1655639015.

It is not an unprimeable number, because it can be changed into a prime (1655639057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405360 + ... + 409423.

Almost surely, 2^1655639056 is an apocalyptic number.

1655639056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1655639056 is a deficient number, since it is larger than the sum of its proper divisors (1577423856).

1655639056 is a wasteful number, since it uses less digits than its factorization.

1655639056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814918 (or 814912 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 46.

The square root of 1655639056 is about 40689.5447996165. The cubic root of 1655639056 is about 1183.0103772681.

The spelling of 1655639056 in words is "one billion, six hundred fifty-five million, six hundred thirty-nine thousand, fifty-six".