9138972476 has 48 divisors (see below), whose sum is σ = 16398637920. Its totient is φ = 4455475200.

The previous prime is 9138972473. The next prime is 9138972527. The reversal of 9138972476 is 6742798319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138972473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15568655 + ... + 15569241.

It is an arithmetic number, because the mean of its divisors is an integer number (341638290).

Almost surely, 2^9138972476 is an apocalyptic number.

It is an amenable number.

9138972476 is a deficient number, since it is larger than the sum of its proper divisors (7259665444).

9138972476 is a wasteful number, since it uses less digits than its factorization.

9138972476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The square root of 9138972476 is about 95597.9731793515. The cubic root of 9138972476 is about 2090.7356426871.

The spelling of 9138972476 in words is "nine billion, one hundred thirty-eight million, nine hundred seventy-two thousand, four hundred seventy-six".