1656608532 has 24 divisors (see below), whose sum is σ = 3866592576. Its totient is φ = 552035328.

The previous prime is 1656608509. The next prime is 1656608539. The reversal of 1656608532 is 2358066561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656608539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24148 + ... + 62420.

It is an arithmetic number, because the mean of its divisors is an integer number (161108024).

Almost surely, 2^1656608532 is an apocalyptic number.

1656608532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656608532 is an abundant number, since it is smaller than the sum of its proper divisors (2209984044).

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

1656608532 is a wasteful number, since it uses less digits than its factorization.

1656608532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41887 (or 41885 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 1656608532 is about 40701.4561410277. The cubic root of 1656608532 is about 1183.2412400635.

The spelling of 1656608532 in words is "one billion, six hundred fifty-six million, six hundred eight thousand, five hundred thirty-two".