138297357 has 24 divisors (see below), whose sum is σ = 221626080. Its totient is φ = 82392480.

The previous prime is 138297353. The next prime is 138297361. The reversal of 138297357 is 753792831.

It is a happy number.

138297357 is a `hidden beast` number, since 1 + 3 + 8 + 297 + 357 = 666.

It is an interprime number because it is at equal distance from previous prime (138297353) and next prime (138297361).

It is not a de Polignac number, because 138297357 - 2² = 138297353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138297353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5998 + ... + 17679.

It is an arithmetic number, because the mean of its divisors is an integer number (9234420).

Almost surely, 2^138297357 is an apocalyptic number.

It is an amenable number.

138297357 is a deficient number, since it is larger than the sum of its proper divisors (83328723).

138297357 is a wasteful number, since it uses less digits than its factorization.

138297357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23753 (or 23750 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 138297357 is about 11759.9896683628. The cubic root of 138297357 is about 517.1358272420.

The spelling of 138297357 in words is "one hundred thirty-eight million, two hundred ninety-seven thousand, three hundred fifty-seven".