7138718238 has 32 divisors (see below), whose sum is σ = 14465664000. Its totient is φ = 2348233056.

The previous prime is 7138718189. The next prime is 7138718243. The reversal of 7138718238 is 8328178317.

It is a super-2 number, since 2×7138718238² (a number of 21 digits) contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 1639288 + ... + 1643636.

It is an arithmetic number, because the mean of its divisors is an integer number (452052000).

Almost surely, 2^7138718238 is an apocalyptic number.

7138718238 is an abundant number, since it is smaller than the sum of its proper divisors (7326945762).

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

7138718238 is a wasteful number, since it uses less digits than its factorization.

7138718238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its digits is 451584, while the sum is 48.

The square root of 7138718238 is about 84490.9358333780. The cubic root of 7138718238 is about 1925.4847365772.

The spelling of 7138718238 in words is "seven billion, one hundred thirty-eight million, seven hundred eighteen thousand, two hundred thirty-eight".