248618139 has 32 divisors (see below), whose sum is σ = 414927360. Its totient is φ = 128640000.

The previous prime is 248618129. The next prime is 248618141. The reversal of 248618139 is 931816842.

It is not a de Polignac number, because 248618139 - 2⁵ = 248618107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248618139.

It is not an unprimeable number, because it can be changed into a prime (248618119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60139 + ... + 64139.

It is an arithmetic number, because the mean of its divisors is an integer number (12966480).

Almost surely, 2^248618139 is an apocalyptic number.

248618139 is a deficient number, since it is larger than the sum of its proper divisors (166309221).

248618139 is a wasteful number, since it uses less digits than its factorization.

248618139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291.

The product of its digits is 82944, while the sum is 42.

The square root of 248618139 is about 15767.6294667271. The cubic root of 248618139 is about 628.7976892975.

The spelling of 248618139 in words is "two hundred forty-eight million, six hundred eighteen thousand, one hundred thirty-nine".