253921838 has 4 divisors (see below), whose sum is σ = 380882760. Its totient is φ = 126960918.

The previous prime is 253921819. The next prime is 253921873. The reversal of 253921838 is 838129352.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 253921795 and 253921804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63480458 + ... + 63480461.

It is an arithmetic number, because the mean of its divisors is an integer number (95220690).

Almost surely, 2^253921838 is an apocalyptic number.

253921838 is a deficient number, since it is larger than the sum of its proper divisors (126960922).

253921838 is a wasteful number, since it uses less digits than its factorization.

253921838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126960921.

The product of its digits is 103680, while the sum is 41.

The square root of 253921838 is about 15934.9251018008. The cubic root of 253921838 is about 633.2375855871.

The spelling of 253921838 in words is "two hundred fifty-three million, nine hundred twenty-one thousand, eight hundred thirty-eight".