1381298916 has 12 divisors (see below), whose sum is σ = 3223030832. Its totient is φ = 460432968.

The previous prime is 1381298887. The next prime is 1381298923. The reversal of 1381298916 is 6198921831.

It is a tau number, because it is divible by the number of its divisors (12).

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, 57554110 + ... + 57554133.

Almost surely, 2^1381298916 is an apocalyptic number.

It is an amenable number.

1381298916 is an abundant number, since it is smaller than the sum of its proper divisors (1841731916).

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

1381298916 is a wasteful number, since it uses less digits than its factorization.

1381298916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115108250 (or 115108248 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The square root of 1381298916 is about 37165.8299517177. The cubic root of 1381298916 is about 1113.6854788220.

The spelling of 1381298916 in words is "one billion, three hundred eighty-one million, two hundred ninety-eight thousand, nine hundred sixteen".