254638923 has 16 divisors (see below), whose sum is σ = 423296256. Its totient is φ = 132279840.

The previous prime is 254638919. The next prime is 254638963. The reversal of 254638923 is 329836452.

It is not a de Polignac number, because 254638923 - 2² = 254638919 is a prime.

It is a super-2 number, since 2×254638923² = 129681962213199858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (254638963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550936 + ... + 551397.

It is an arithmetic number, because the mean of its divisors is an integer number (26456016).

Almost surely, 2^254638923 is an apocalyptic number.

254638923 is a deficient number, since it is larger than the sum of its proper divisors (168657333).

254638923 is a wasteful number, since it uses less digits than its factorization.

254638923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102354.

The product of its digits is 311040, while the sum is 42.

The square root of 254638923 is about 15957.4096582121. The cubic root of 254638923 is about 633.8331210685.

The spelling of 254638923 in words is "two hundred fifty-four million, six hundred thirty-eight thousand, nine hundred twenty-three".