253423863 has 64 divisors (see below), whose sum is σ = 474316800. Its totient is φ = 129898080.

The previous prime is 253423799. The next prime is 253423873. The reversal of 253423863 is 368324352.

It is a happy number.

It is not a de Polignac number, because 253423863 - 2⁶ = 253423799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253423873) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 163470 + ... + 165012.

It is an arithmetic number, because the mean of its divisors is an integer number (7411200).

Almost surely, 2^253423863 is an apocalyptic number.

253423863 is a deficient number, since it is larger than the sum of its proper divisors (220892937).

253423863 is a wasteful number, since it uses less digits than its factorization.

253423863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1643 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 253423863 is about 15919.2921639123. The cubic root of 253423863 is about 632.8233598904.

The spelling of 253423863 in words is "two hundred fifty-three million, four hundred twenty-three thousand, eight hundred sixty-three".