1655628201 has 32 divisors (see below), whose sum is σ = 2506176000. Its totient is φ = 1079979264.

The previous prime is 1655628193. The next prime is 1655628203. The reversal of 1655628201 is 1028265561.

1655628201 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 628 + 20 + 1 = 666.

1655628201 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 1655628201 - 2³ = 1655628193 is a prime.

It is a super-2 number, since 2×1655628201² = 5482209479892992802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1655628203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237595 + ... + 244463.

It is an arithmetic number, because the mean of its divisors is an integer number (78318000).

Almost surely, 2^1655628201 is an apocalyptic number.

It is an amenable number.

1655628201 is a deficient number, since it is larger than the sum of its proper divisors (850547799).

1655628201 is a wasteful number, since it uses less digits than its factorization.

1655628201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070 (or 7064 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1655628201 is about 40689.4114113242. The cubic root of 1655628201 is about 1183.0077918403.

The spelling of 1655628201 in words is "one billion, six hundred fifty-five million, six hundred twenty-eight thousand, two hundred one".