1831881136 has 10 divisors (see below), whose sum is σ = 3549269732. Its totient is φ = 915940560.

The previous prime is 1831881127. The next prime is 1831881157. The reversal of 1831881136 is 6311881381.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57246270 + ... + 57246301.

Almost surely, 2^1831881136 is an apocalyptic number.

1831881136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1831881136 is a deficient number, since it is larger than the sum of its proper divisors (1717388596).

1831881136 is a wasteful number, since it uses less digits than its factorization.

1831881136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114492579 (or 114492573 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 1831881136 is about 42800.4805580498. The cubic root of 1831881136 is about 1223.5801705672.

The spelling of 1831881136 in words is "one billion, eight hundred thirty-one million, eight hundred eighty-one thousand, one hundred thirty-six".