9138640374 has 24 divisors (see below), whose sum is σ = 20309650920. Its totient is φ = 3045979296.

The previous prime is 9138640373. The next prime is 9138640409. The reversal of 9138640374 is 4730468319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138640373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 695982 + ... + 708990.

It is an arithmetic number, because the mean of its divisors is an integer number (846235455).

Almost surely, 2^9138640374 is an apocalyptic number.

9138640374 is an abundant number, since it is smaller than the sum of its proper divisors (11171010546).

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

9138640374 is an frugal number, since it uses more digits than its factorization.

9138640374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26029 (or 13014 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 9138640374 is about 95596.2361915991. The cubic root of 9138640374 is about 2090.7103172325.

The spelling of 9138640374 in words is "nine billion, one hundred thirty-eight million, six hundred forty thousand, three hundred seventy-four".