338791138 has 16 divisors (see below), whose sum is σ = 587312640. Its totient is φ = 143564256.

The previous prime is 338791121. The next prime is 338791139. The reversal of 338791138 is 831197833.

It is a super-2 number, since 2×338791138² = 229558870374670088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338791094 and 338791103.

It is not an unprimeable number, because it can be changed into a prime (338791139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134706 + ... + 137197.

It is an arithmetic number, because the mean of its divisors is an integer number (36707040).

Almost surely, 2^338791138 is an apocalyptic number.

338791138 is a deficient number, since it is larger than the sum of its proper divisors (248521502).

338791138 is a wasteful number, since it uses less digits than its factorization.

338791138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272001.

The product of its digits is 108864, while the sum is 43.

The square root of 338791138 is about 18406.2798522678. The cubic root of 338791138 is about 697.1250370048.

The spelling of 338791138 in words is "three hundred thirty-eight million, seven hundred ninety-one thousand, one hundred thirty-eight".