1381864674 has 16 divisors (see below), whose sum is σ = 2859030720. Its totient is φ = 444738000.

The previous prime is 1381864657. The next prime is 1381864681. The reversal of 1381864674 is 4764681831.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3970702 + ... + 3971049.

It is an arithmetic number, because the mean of its divisors is an integer number (178689420).

Almost surely, 2^1381864674 is an apocalyptic number.

1381864674 is an abundant number, since it is smaller than the sum of its proper divisors (1477166046).

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

1381864674 is a wasteful number, since it uses less digits than its factorization.

1381864674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7941785.

The product of its digits is 774144, while the sum is 48.

The square root of 1381864674 is about 37173.4404380332. The cubic root of 1381864674 is about 1113.8375073362.

The spelling of 1381864674 in words is "one billion, three hundred eighty-one million, eight hundred sixty-four thousand, six hundred seventy-four".