1808190112 has 12 divisors (see below), whose sum is σ = 3559874346. Its totient is φ = 904095040.

The previous prime is 1808190089. The next prime is 1808190187. The reversal of 1808190112 is 2110918081.

It can be written as a sum of positive squares in only one way, i.e., 1736888976 + 71301136 = 41676^2 + 8444^2 .

It is a super-2 number, since 2×1808190112² = 6539102962269145088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28252939 + ... + 28253002.

Almost surely, 2^1808190112 is an apocalyptic number.

It is an amenable number.

1808190112 is a deficient number, since it is larger than the sum of its proper divisors (1751684234).

1808190112 is an equidigital number, since it uses as much as digits as its factorization.

1808190112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56505951 (or 56505943 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 31.

The square root of 1808190112 is about 42522.8187212466. The cubic root of 1808190112 is about 1218.2825677745.

The spelling of 1808190112 in words is "one billion, eight hundred eight million, one hundred ninety thousand, one hundred twelve".