138713594 has 4 divisors (see below), whose sum is σ = 208070394. Its totient is φ = 69356796.

The previous prime is 138713593. The next prime is 138713599. The reversal of 138713594 is 495317831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 495317831 = 17 ⋅29136343.

It can be written as a sum of positive squares in only one way, i.e., 128709025 + 10004569 = 11345^2 + 3163^2 .

It is a super-2 number, since 2×138713594² = 38482922320793672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138713593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34678397 + ... + 34678400.

Almost surely, 2^138713594 is an apocalyptic number.

138713594 is a deficient number, since it is larger than the sum of its proper divisors (69356800).

138713594 is an equidigital number, since it uses as much as digits as its factorization.

138713594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69356799.

The product of its digits is 90720, while the sum is 41.

The square root of 138713594 is about 11777.6735393710. The cubic root of 138713594 is about 517.6541198098.

The spelling of 138713594 in words is "one hundred thirty-eight million, seven hundred thirteen thousand, five hundred ninety-four".