253940918 has 32 divisors (see below), whose sum is σ = 480936960. Its totient is φ = 97680960.

The previous prime is 253940903. The next prime is 253940923. The reversal of 253940918 is 819049352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1730 + ... + 22602.

It is an arithmetic number, because the mean of its divisors is an integer number (15029280).

Almost surely, 2^253940918 is an apocalyptic number.

253940918 is a deficient number, since it is larger than the sum of its proper divisors (226996042).

253940918 is a wasteful number, since it uses less digits than its factorization.

253940918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20972.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 253940918 is about 15935.5237755149. The cubic root of 253940918 is about 633.2534459408.

The spelling of 253940918 in words is "two hundred fifty-three million, nine hundred forty thousand, nine hundred eighteen".