138613357 has 2 divisors, whose sum is σ = 138613358. Its totient is φ = 138613356.

The previous prime is 138613339. The next prime is 138613429. The reversal of 138613357 is 753316831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75585636 + 63027721 = 8694^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 138613357 - 2¹¹ = 138611309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138613457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69306678 + 69306679.

It is an arithmetic number, because the mean of its divisors is an integer number (69306679).

Almost surely, 2^138613357 is an apocalyptic number.

It is an amenable number.

138613357 is a deficient number, since it is larger than the sum of its proper divisors (1).

138613357 is an equidigital number, since it uses as much as digits as its factorization.

138613357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 138613357 is about 11773.4173883372. The cubic root of 138613357 is about 517.5294009605.

The spelling of 138613357 in words is "one hundred thirty-eight million, six hundred thirteen thousand, three hundred fifty-seven".