1630380664 has 16 divisors (see below), whose sum is σ = 3334869720. Its totient is φ = 741082080.

The previous prime is 1630380643. The next prime is 1630380677. The reversal of 1630380664 is 4660830361.

It is a super-2 number, since 2×1630380664² = 5316282219090161792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9263439 + ... + 9263614.

Almost surely, 2^1630380664 is an apocalyptic number.

It is an amenable number.

1630380664 is an abundant number, since it is smaller than the sum of its proper divisors (1704489056).

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

1630380664 is a wasteful number, since it uses less digits than its factorization.

1630380664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18527070 (or 18527066 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 1630380664 is about 40377.9725097732. The cubic root of 1630380664 is about 1176.9635288328.

The spelling of 1630380664 in words is "one billion, six hundred thirty million, three hundred eighty thousand, six hundred sixty-four".