1656226057 has 16 divisors (see below), whose sum is σ = 1728105984. Its totient is φ = 1585584000.

The previous prime is 1656226051. The next prime is 1656226123. The reversal of 1656226057 is 7506226561.

It is a cyclic number.

It is not a de Polignac number, because 1656226057 - 2³ = 1656226049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1656226051) 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, 2505307 + ... + 2505967.

It is an arithmetic number, because the mean of its divisors is an integer number (108006624).

Almost surely, 2^1656226057 is an apocalyptic number.

It is an amenable number.

1656226057 is a deficient number, since it is larger than the sum of its proper divisors (71879927).

1656226057 is a wasteful number, since it uses less digits than its factorization.

1656226057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1656226057 is about 40696.7573278265. The cubic root of 1656226057 is about 1183.1501714701.

The spelling of 1656226057 in words is "one billion, six hundred fifty-six million, two hundred twenty-six thousand, fifty-seven".