138353377 has 2 divisors, whose sum is σ = 138353378. Its totient is φ = 138353376.

The previous prime is 138353329. The next prime is 138353387. The reversal of 138353377 is 773353831.

138353377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130507776 + 7845601 = 11424^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 138353377 - 2¹⁹ = 137829089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138353387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69176688 + 69176689.

It is an arithmetic number, because the mean of its divisors is an integer number (69176689).

Almost surely, 2^138353377 is an apocalyptic number.

It is an amenable number.

138353377 is a deficient number, since it is larger than the sum of its proper divisors (1).

138353377 is an equidigital number, since it uses as much as digits as its factorization.

138353377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 40.

The square root of 138353377 is about 11762.3712320263. The cubic root of 138353377 is about 517.2056430816.

The spelling of 138353377 in words is "one hundred thirty-eight million, three hundred fifty-three thousand, three hundred seventy-seven".