138410893 has 2 divisors, whose sum is σ = 138410894. Its totient is φ = 138410892.

The previous prime is 138410887. The next prime is 138410927. The reversal of 138410893 is 398014831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132641289 + 5769604 = 11517^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 138410893 - 2¹⁷ = 138279821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138410863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69205446 + 69205447.

It is an arithmetic number, because the mean of its divisors is an integer number (69205447).

Almost surely, 2^138410893 is an apocalyptic number.

It is an amenable number.

138410893 is a deficient number, since it is larger than the sum of its proper divisors (1).

138410893 is an equidigital number, since it uses as much as digits as its factorization.

138410893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 138410893 is about 11764.8158931621. The cubic root of 138410893 is about 517.2773037310.

The spelling of 138410893 in words is "one hundred thirty-eight million, four hundred ten thousand, eight hundred ninety-three".