137866380 has 48 divisors (see below), whose sum is σ = 391474944. Its totient is φ = 36245440.

The previous prime is 137866367. The next prime is 137866459. The reversal of 137866380 is 83668731.

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 in 15 ways as a sum of consecutive naturals, for example, 11922 + ... + 20441.

It is an arithmetic number, because the mean of its divisors is an integer number (8155728).

Almost surely, 2^137866380 is an apocalyptic number.

137866380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137866380 is an abundant number, since it is smaller than the sum of its proper divisors (253608564).

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

137866380 is a wasteful number, since it uses less digits than its factorization.

137866380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32446 (or 32444 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 137866380 is about 11741.6515022377. The cubic root of 137866380 is about 516.5980836241.

The spelling of 137866380 in words is "one hundred thirty-seven million, eight hundred sixty-six thousand, three hundred eighty".