9156918438 has 48 divisors (see below), whose sum is σ = 20246662800. Its totient is φ = 2989925952.

The previous prime is 9156918409. The next prime is 9156918443. The reversal of 9156918438 is 8348196519.

9156918438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615613 + ... + 630311.

It is an arithmetic number, because the mean of its divisors is an integer number (421805475).

Almost surely, 2^9156918438 is an apocalyptic number.

9156918438 is an abundant number, since it is smaller than the sum of its proper divisors (11089744362).

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

9156918438 is a wasteful number, since it uses less digits than its factorization.

9156918438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15413 (or 15410 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 9156918438 is about 95691.7887699880. The cubic root of 9156918438 is about 2092.1032555876.

The spelling of 9156918438 in words is "nine billion, one hundred fifty-six million, nine hundred eighteen thousand, four hundred thirty-eight".