248919138 has 24 divisors (see below), whose sum is σ = 580811868. Its totient is φ = 76590432.

The previous prime is 248919127. The next prime is 248919157. The reversal of 248919138 is 831919842.

248919138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 248157009 + 762129 = 15753^2 + 873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 248919093 and 248919102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 531645 + ... + 532112.

Almost surely, 2^248919138 is an apocalyptic number.

248919138 is an abundant number, since it is smaller than the sum of its proper divisors (331892730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

248919138 is a wasteful number, since it uses less digits than its factorization.

248919138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063778 (or 1063775 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 248919138 is about 15777.1714194909. The cubic root of 248919138 is about 629.0513462330.

The spelling of 248919138 in words is "two hundred forty-eight million, nine hundred nineteen thousand, one hundred thirty-eight".