1381831605936 has 100 divisors (see below), whose sum is σ = 4014180602784. Its totient is φ = 458910748800.

The previous prime is 1381831605899. The next prime is 1381831605937. The reversal of 1381831605936 is 6395061381831.

1381831605936 is a `hidden beast` number, since 1 + 3 + 8 + 18 + 31 + 6 + 0 + 593 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1381831605937) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1615995 + ... + 2318426.

Almost surely, 2^{1381831605936} is an apocalyptic number.

1381831605936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381831605936 is an abundant number, since it is smaller than the sum of its proper divisors (2632348996848).

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

1381831605936 is a wasteful number, since it uses less digits than its factorization.

1381831605936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934712 (or 3934697 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 1381831605936 in words is "one trillion, three hundred eighty-one billion, eight hundred thirty-one million, six hundred five thousand, nine hundred thirty-six".