137871612 has 24 divisors (see below), whose sum is σ = 357445200. Its totient is φ = 45957168.

The previous prime is 137871611. The next prime is 137871623. The reversal of 137871612 is 216178731.

137871612 is a `hidden beast` number, since 1 + 37 + 8 + 7 + 1 + 612 = 666.

137871612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137871611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638187 + ... + 638402.

It is an arithmetic number, because the mean of its divisors is an integer number (14893550).

Almost surely, 2^137871612 is an apocalyptic number.

137871612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

137871612 is an abundant number, since it is smaller than the sum of its proper divisors (219573588).

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

137871612 is a wasteful number, since it uses less digits than its factorization.

137871612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276602 (or 1276594 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 137871612 is about 11741.8742967211. The cubic root of 137871612 is about 516.6046184708.

The spelling of 137871612 in words is "one hundred thirty-seven million, eight hundred seventy-one thousand, six hundred twelve".