137904874 has 8 divisors (see below), whose sum is σ = 208053540. Its totient is φ = 68553696.

The previous prime is 137904857. The next prime is 137904881. The reversal of 137904874 is 478409731.

It can be written as a sum of positive squares in 2 ways, for example, as 118483225 + 19421649 = 10885^2 + 4407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 137904874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198939 + ... + 199630.

Almost surely, 2^137904874 is an apocalyptic number.

137904874 is a deficient number, since it is larger than the sum of its proper divisors (70148666).

137904874 is a wasteful number, since it uses less digits than its factorization.

137904874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398744.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 137904874 is about 11743.2905950590. The cubic root of 137904874 is about 516.6461593433.

The spelling of 137904874 in words is "one hundred thirty-seven million, nine hundred four thousand, eight hundred seventy-four".