253638089 has 8 divisors (see below), whose sum is σ = 273792960. Its totient is φ = 234243856.

The previous prime is 253638067. The next prime is 253638103. The reversal of 253638089 is 980836352.

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

It is a cyclic number.

It is not a de Polignac number, because 253638089 - 2²⁴ = 236860873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253638389) 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, 189467 + ... + 190800.

It is an arithmetic number, because the mean of its divisors is an integer number (34224120).

Almost surely, 2^253638089 is an apocalyptic number.

253638089 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

253638089 is a deficient number, since it is larger than the sum of its proper divisors (20154871).

253638089 is a wasteful number, since it uses less digits than its factorization.

253638089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380319.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 253638089 is about 15926.0192452477. The cubic root of 253638089 is about 633.0016238654.

The spelling of 253638089 in words is "two hundred fifty-three million, six hundred thirty-eight thousand, eighty-nine".