653631338 has 4 divisors (see below), whose sum is σ = 980447010. Its totient is φ = 326815668.

The previous prime is 653631313. The next prime is 653631371. The reversal of 653631338 is 833136356.

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., 470759809 + 182871529 = 21697^2 + 13523^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163407833 + ... + 163407836.

Almost surely, 2^653631338 is an apocalyptic number.

653631338 is a deficient number, since it is larger than the sum of its proper divisors (326815672).

653631338 is a wasteful number, since it uses less digits than its factorization.

653631338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326815671.

The product of its digits is 116640, while the sum is 38.

The square root of 653631338 is about 25566.2147765366. The cubic root of 653631338 is about 867.8492424010.

The spelling of 653631338 in words is "six hundred fifty-three million, six hundred thirty-one thousand, three hundred thirty-eight".