1521521164 has 6 divisors (see below), whose sum is σ = 2662662044. Its totient is φ = 760760580.

The previous prime is 1521521153. The next prime is 1521521171. The reversal of 1521521164 is 4611251251.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190190142 + ... + 190190149.

Almost surely, 2^1521521164 is an apocalyptic number.

It is an amenable number.

1521521164 is a deficient number, since it is larger than the sum of its proper divisors (1141140880).

1521521164 is a wasteful number, since it uses less digits than its factorization.

1521521164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380380295 (or 380380293 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 1521521164 is about 39006.6810174872. The cubic root of 1521521164 is about 1150.1628412126.

The spelling of 1521521164 in words is "one billion, five hundred twenty-one million, five hundred twenty-one thousand, one hundred sixty-four".