1656481524 has 12 divisors (see below), whose sum is σ = 3865123584. Its totient is φ = 552160504.

The previous prime is 1656481523. The next prime is 1656481529. The reversal of 1656481524 is 4251846561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656481523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69020052 + ... + 69020075.

It is an arithmetic number, because the mean of its divisors is an integer number (322093632).

Almost surely, 2^1656481524 is an apocalyptic number.

It is an amenable number.

1656481524 is an abundant number, since it is smaller than the sum of its proper divisors (2208642060).

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

1656481524 is a wasteful number, since it uses less digits than its factorization.

1656481524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138040134 (or 138040132 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 1656481524 is about 40699.8958721027. The cubic root of 1656481524 is about 1183.2110005830.

The spelling of 1656481524 in words is "one billion, six hundred fifty-six million, four hundred eighty-one thousand, five hundred twenty-four".