253137838 has 4 divisors (see below), whose sum is σ = 379706760. Its totient is φ = 126568918.

The previous prime is 253137821. The next prime is 253137853. The reversal of 253137838 is 838731352.

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

It is a self number, because there is not a number n which added to its sum of digits gives 253137838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63284458 + ... + 63284461.

It is an arithmetic number, because the mean of its divisors is an integer number (94926690).

Almost surely, 2^253137838 is an apocalyptic number.

253137838 is a deficient number, since it is larger than the sum of its proper divisors (126568922).

253137838 is a wasteful number, since it uses less digits than its factorization.

253137838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126568921.

The product of its digits is 120960, while the sum is 40.

The square root of 253137838 is about 15910.3060309976. The cubic root of 253137838 is about 632.5851931052.

The spelling of 253137838 in words is "two hundred fifty-three million, one hundred thirty-seven thousand, eight hundred thirty-eight".