1381465884 has 24 divisors (see below), whose sum is σ = 3278056320. Its totient is φ = 452683504.

The previous prime is 1381465873. The next prime is 1381465907. The reversal of 1381465884 is 4885641831.

It is a congruent 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, 974904 + ... + 976319.

It is an arithmetic number, because the mean of its divisors is an integer number (136585680).

Almost surely, 2^1381465884 is an apocalyptic number.

It is an amenable number.

1381465884 is an abundant number, since it is smaller than the sum of its proper divisors (1896590436).

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

1381465884 is a wasteful number, since it uses less digits than its factorization.

1381465884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951289 (or 1951287 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The square root of 1381465884 is about 37168.0761406883. The cubic root of 1381465884 is about 1113.7303501970.

The spelling of 1381465884 in words is "one billion, three hundred eighty-one million, four hundred sixty-five thousand, eight hundred eighty-four".