253638998 has 8 divisors (see below), whose sum is σ = 380589192. Its totient is φ = 126775936.

The previous prime is 253638971. The next prime is 253639003. The reversal of 253638998 is 899836352.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13940 + ... + 26487.

It is an arithmetic number, because the mean of its divisors is an integer number (47573649).

Almost surely, 2^253638998 is an apocalyptic number.

253638998 is a deficient number, since it is larger than the sum of its proper divisors (126950194).

253638998 is a wasteful number, since it uses less digits than its factorization.

253638998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43566.

The product of its digits is 2799360, while the sum is 53.

The square root of 253638998 is about 15926.0477834270. The cubic root of 253638998 is about 633.0023800581.

The spelling of 253638998 in words is "two hundred fifty-three million, six hundred thirty-eight thousand, nine hundred ninety-eight".