138341497 has 16 divisors (see below), whose sum is σ = 161980672. Its totient is φ = 115706880.

The previous prime is 138341479. The next prime is 138341507. The reversal of 138341497 is 794143831.

It is a cyclic number.

It is not a de Polignac number, because 138341497 - 2¹⁹ = 137817209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138341407) 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, 48172 + ... + 50962.

It is an arithmetic number, because the mean of its divisors is an integer number (10123792).

Almost surely, 2^138341497 is an apocalyptic number.

It is an amenable number.

138341497 is a deficient number, since it is larger than the sum of its proper divisors (23639175).

138341497 is an equidigital number, since it uses as much as digits as its factorization.

138341497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968.

The product of its digits is 72576, while the sum is 40.

The square root of 138341497 is about 11761.8662209702. The cubic root of 138341497 is about 517.1908390124.

The spelling of 138341497 in words is "one hundred thirty-eight million, three hundred forty-one thousand, four hundred ninety-seven".