253803138 has 16 divisors (see below), whose sum is σ = 523981056. Its totient is φ = 81871920.

The previous prime is 253803133. The next prime is 253803163. The reversal of 253803138 is 831308352.

253803138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 253803099 and 253803108.

It is not an unprimeable number, because it can be changed into a prime (253803131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682081 + ... + 682452.

It is an arithmetic number, because the mean of its divisors is an integer number (32748816).

Almost surely, 2^253803138 is an apocalyptic number.

253803138 is an abundant number, since it is smaller than the sum of its proper divisors (270177918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253803138 is a wasteful number, since it uses less digits than its factorization.

253803138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364569.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 253803138 is about 15931.2001431154. The cubic root of 253803138 is about 633.1388977160.

The spelling of 253803138 in words is "two hundred fifty-three million, eight hundred three thousand, one hundred thirty-eight".