9138392451 has 12 divisors (see below), whose sum is σ = 13300664520. Its totient is φ = 6045755040.

The previous prime is 9138392441. The next prime is 9138392477. The reversal of 9138392451 is 1542938319.

It is a happy number.

It is not a de Polignac number, because 9138392451 - 2¹¹ = 9138390403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9138392397 and 9138392406.

It is not an unprimeable number, because it can be changed into a prime (9138392441) 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 11 ways as a sum of consecutive naturals, for example, 3874306 + ... + 3876663.

It is an arithmetic number, because the mean of its divisors is an integer number (1108388710).

Almost surely, 2^9138392451 is an apocalyptic number.

9138392451 is a deficient number, since it is larger than the sum of its proper divisors (4162272069).

9138392451 is a wasteful number, since it uses less digits than its factorization.

9138392451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7751106 (or 7751103 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 9138392451 is about 95594.9394633419. The cubic root of 9138392451 is about 2090.6914107052.

The spelling of 9138392451 in words is "nine billion, one hundred thirty-eight million, three hundred ninety-two thousand, four hundred fifty-one".