1656424564 has 24 divisors (see below), whose sum is σ = 2916950400. Its totient is φ = 823027680.

The previous prime is 1656424537. The next prime is 1656424573. The reversal of 1656424564 is 4654246561.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1656424564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444742 + ... + 448450.

It is an arithmetic number, because the mean of its divisors is an integer number (121539600).

Almost surely, 2^1656424564 is an apocalyptic number.

It is an amenable number.

1656424564 is a deficient number, since it is larger than the sum of its proper divisors (1260525836).

1656424564 is a wasteful number, since it uses less digits than its factorization.

1656424564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383 (or 4381 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 1656424564 is about 40699.1961099971. The cubic root of 1656424564 is about 1183.1974384092.

The spelling of 1656424564 in words is "one billion, six hundred fifty-six million, four hundred twenty-four thousand, five hundred sixty-four".