253689294438 has 48 divisors (see below), whose sum is σ = 570464993280. Its totient is φ = 84496774536.

The previous prime is 253689294403. The next prime is 253689294457. The reversal of 253689294438 is 834492986352.

It is a happy number.

253689294438 is a `hidden beast` number, since 2 + 5 + 36 + 89 + 2 + 94 + 438 = 666.

It is a super-2 number, since 2×253689294438² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 417531 + ... + 825657.

It is an arithmetic number, because the mean of its divisors is an integer number (11884687360).

Almost surely, 2^253689294438 is an apocalyptic number.

253689294438 is an abundant number, since it is smaller than the sum of its proper divisors (316775698842).

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

253689294438 is a wasteful number, since it uses less digits than its factorization.

253689294438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409423 (or 409411 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 253689294438 in words is "two hundred fifty-three billion, six hundred eighty-nine million, two hundred ninety-four thousand, four hundred thirty-eight".