1401564564 has 36 divisors (see below), whose sum is σ = 3729311040. Its totient is φ = 442599120.

The previous prime is 1401564553. The next prime is 1401564587. The reversal of 1401564564 is 4654651041.

1401564564 is a `hidden beast` number, since 1 + 4 + 0 + 1 + 5 + 645 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1023852 + ... + 1025219.

Almost surely, 2^1401564564 is an apocalyptic number.

It is an amenable number.

1401564564 is an abundant number, since it is smaller than the sum of its proper divisors (2327746476).

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

1401564564 is a wasteful number, since it uses less digits than its factorization.

1401564564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049100 (or 2049095 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1401564564 is about 37437.4753956513. The cubic root of 1401564564 is about 1119.1055156175.

The spelling of 1401564564 in words is "one billion, four hundred one million, five hundred sixty-four thousand, five hundred sixty-four".