7139918904 has 32 divisors (see below), whose sum is σ = 17857562640. Its totient is φ = 2378937600.

The previous prime is 7139918873. The next prime is 7139918909. The reversal of 7139918904 is 4098199317.

It is a happy number.

It is a super-2 number, since 2×7139918904² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7139918909) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7357 + ... + 119724.

Almost surely, 2^7139918904 is an apocalyptic number.

It is an amenable number.

7139918904 is an abundant number, since it is smaller than the sum of its proper divisors (10717643736).

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

7139918904 is a wasteful number, since it uses less digits than its factorization.

7139918904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129431 (or 129427 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 7139918904 is about 84498.0408293589. The cubic root of 7139918904 is about 1925.5926800661.

The spelling of 7139918904 in words is "seven billion, one hundred thirty-nine million, nine hundred eighteen thousand, nine hundred four".