1381355364 has 24 divisors (see below), whose sum is σ = 3232303200. Its totient is φ = 459145984.

The previous prime is 1381355329. The next prime is 1381355387. The reversal of 1381355364 is 4635531831.

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, 158814 + ... + 167285.

It is an arithmetic number, because the mean of its divisors is an integer number (134679300).

Almost surely, 2^1381355364 is an apocalyptic number.

It is an amenable number.

1381355364 is an abundant number, since it is smaller than the sum of its proper divisors (1850947836).

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

1381355364 is a wasteful number, since it uses less digits than its factorization.

1381355364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326459 (or 326457 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1381355364 is about 37166.5893511901. The cubic root of 1381355364 is about 1113.7006491955.

The spelling of 1381355364 in words is "one billion, three hundred eighty-one million, three hundred fifty-five thousand, three hundred sixty-four".