655136938 has 4 divisors (see below), whose sum is σ = 982705410. Its totient is φ = 327568468.

The previous prime is 655136903. The next prime is 655136953. The reversal of 655136938 is 839631556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 516062089 + 139074849 = 22717^2 + 11793^2 .

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 as a sum of consecutive naturals, namely, 163784233 + ... + 163784236.

Almost surely, 2^655136938 is an apocalyptic number.

655136938 is a deficient number, since it is larger than the sum of its proper divisors (327568472).

655136938 is a wasteful number, since it uses less digits than its factorization.

655136938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327568471.

The product of its digits is 583200, while the sum is 46.

The square root of 655136938 is about 25595.6429495334. The cubic root of 655136938 is about 868.5150773933.

The spelling of 655136938 in words is "six hundred fifty-five million, one hundred thirty-six thousand, nine hundred thirty-eight".