137881612 has 12 divisors (see below), whose sum is σ = 263228616. Its totient is φ = 62673440.

The previous prime is 137881547. The next prime is 137881649. The reversal of 137881612 is 216188731.

It is a super-2 number, since 2×137881612² = 38022677855437088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566793 + ... + 1566880.

It is an arithmetic number, because the mean of its divisors is an integer number (21935718).

Almost surely, 2^137881612 is an apocalyptic number.

It is an amenable number.

137881612 is a deficient number, since it is larger than the sum of its proper divisors (125347004).

137881612 is a wasteful number, since it uses less digits than its factorization.

137881612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133688 (or 3133686 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 137881612 is about 11742.3001153948. The cubic root of 137881612 is about 516.6171081613.

It can be divided in two parts, 13788 and 1612, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 137881612 in words is "one hundred thirty-seven million, eight hundred eighty-one thousand, six hundred twelve".