1656198432 has 108 divisors (see below), whose sum is σ = 5478810246. Its totient is φ = 473195520.

The previous prime is 1656198413. The next prime is 1656198433. The reversal of 1656198432 is 2348916561.

1656198432 is a `hidden beast` number, since 1 + 6 + 561 + 9 + 84 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1499548176 + 156650256 = 38724^2 + 12516^2 .

It is a super-3 number, since 3×1656198432³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1656198433) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 44569 + ... + 72792.

Almost surely, 2^1656198432 is an apocalyptic number.

1656198432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656198432 is an abundant number, since it is smaller than the sum of its proper divisors (3822611814).

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

1656198432 is a wasteful number, since it uses less digits than its factorization.

1656198432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117391 (or 117373 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1656198432 is about 40696.4179259060. The cubic root of 1656198432 is about 1183.1435933211.

The spelling of 1656198432 in words is "one billion, six hundred fifty-six million, one hundred ninety-eight thousand, four hundred thirty-two".