138836057 has 2 divisors, whose sum is σ = 138836058. Its totient is φ = 138836056.

The previous prime is 138836051. The next prime is 138836063. The reversal of 138836057 is 750638831.

It is a balanced prime because it is at equal distance from previous prime (138836051) and next prime (138836063).

It can be written as a sum of positive squares in only one way, i.e., 111598096 + 27237961 = 10564^2 + 5219^2 .

It is a cyclic number.

It is not a de Polignac number, because 138836057 - 2⁴ = 138836041 is a prime.

It is not a weakly prime, because it can be changed into another prime (138836051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69418028 + 69418029.

It is an arithmetic number, because the mean of its divisors is an integer number (69418029).

Almost surely, 2^138836057 is an apocalyptic number.

It is an amenable number.

138836057 is a deficient number, since it is larger than the sum of its proper divisors (1).

138836057 is an equidigital number, since it uses as much as digits as its factorization.

138836057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 138836057 is about 11782.8713393638. The cubic root of 138836057 is about 517.8064116129.

The spelling of 138836057 in words is "one hundred thirty-eight million, eight hundred thirty-six thousand, fifty-seven".