138174697 has 2 divisors, whose sum is σ = 138174698. Its totient is φ = 138174696.

The previous prime is 138174671. The next prime is 138174709. The reversal of 138174697 is 796471831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98029801 + 40144896 = 9901^2 + 6336^2 .

It is a cyclic number.

It is not a de Polignac number, because 138174697 - 2¹¹ = 138172649 is a prime.

It is not a weakly prime, because it can be changed into another prime (138174607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69087348 + 69087349.

It is an arithmetic number, because the mean of its divisors is an integer number (69087349).

Almost surely, 2^138174697 is an apocalyptic number.

It is an amenable number.

138174697 is a deficient number, since it is larger than the sum of its proper divisors (1).

138174697 is an equidigital number, since it uses as much as digits as its factorization.

138174697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 138174697 is about 11754.7733708481. The cubic root of 138174697 is about 516.9828943530.

The spelling of 138174697 in words is "one hundred thirty-eight million, one hundred seventy-four thousand, six hundred ninety-seven".