9138351397 has 16 divisors (see below), whose sum is σ = 10996162560. Its totient is φ = 7418822832.

The previous prime is 9138351367. The next prime is 9138351407. The reversal of 9138351397 is 7931538319.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9138351397 - 2¹⁹ = 9137827109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9138351397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138351367) 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, 1036068 + ... + 1044850.

It is an arithmetic number, because the mean of its divisors is an integer number (687260160).

Almost surely, 2^9138351397 is an apocalyptic number.

It is an amenable number.

9138351397 is a deficient number, since it is larger than the sum of its proper divisors (1857811163).

9138351397 is a wasteful number, since it uses less digits than its factorization.

9138351397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16632.

The product of its digits is 612360, while the sum is 49.

The square root of 9138351397 is about 95594.7247341609. The cubic root of 9138351397 is about 2090.6882799075.

The spelling of 9138351397 in words is "nine billion, one hundred thirty-eight million, three hundred fifty-one thousand, three hundred ninety-seven".