1656652128 has 48 divisors (see below), whose sum is σ = 4351702320. Its totient is φ = 551837696.

The previous prime is 1656652051. The next prime is 1656652139. The reversal of 1656652128 is 8212566561.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1656652128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157828 + ... + 167996.

It is an arithmetic number, because the mean of its divisors is an integer number (90660465).

Almost surely, 2^1656652128 is an apocalyptic number.

It is an amenable number.

1656652128 is an abundant number, since it is smaller than the sum of its proper divisors (2695050192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1656652128 is a wasteful number, since it uses less digits than its factorization.

1656652128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11879 (or 11871 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 1656652128 is about 40701.9916957389. The cubic root of 1656652128 is about 1183.2516195288.

The spelling of 1656652128 in words is "one billion, six hundred fifty-six million, six hundred fifty-two thousand, one hundred twenty-eight".