1512121664 has 14 divisors (see below), whose sum is σ = 3000616554. Its totient is φ = 756060800.

The previous prime is 1512121657. The next prime is 1512121673. The reversal of 1512121664 is 4661212151.

It can be written as a sum of positive squares in only one way, i.e., 1363086400 + 149035264 = 36920^2 + 12208^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11813387 + ... + 11813514.

Almost surely, 2^1512121664 is an apocalyptic number.

It is an amenable number.

1512121664 is a deficient number, since it is larger than the sum of its proper divisors (1488494890).

1512121664 is an equidigital number, since it uses as much as digits as its factorization.

1512121664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23626913 (or 23626903 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1512121664 is about 38886.0085892085. The cubic root of 1512121664 is about 1147.7894938721.

The spelling of 1512121664 in words is "one billion, five hundred twelve million, one hundred twenty-one thousand, six hundred sixty-four".