138758353 has 4 divisors (see below), whose sum is σ = 140712768. Its totient is φ = 136803940.

The previous prime is 138758341. The next prime is 138758419. The reversal of 138758353 is 353857831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 353857831 = 3203 ⋅110477.

It is a cyclic number.

It is not a de Polignac number, because 138758353 - 2⁹ = 138757841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138758953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977101 + ... + 977242.

It is an arithmetic number, because the mean of its divisors is an integer number (35178192).

Almost surely, 2^138758353 is an apocalyptic number.

It is an amenable number.

138758353 is a deficient number, since it is larger than the sum of its proper divisors (1954415).

138758353 is an equidigital number, since it uses as much as digits as its factorization.

138758353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954414.

The product of its digits is 302400, while the sum is 43.

The square root of 138758353 is about 11779.5735491570. The cubic root of 138758353 is about 517.7097913280.

The spelling of 138758353 in words is "one hundred thirty-eight million, seven hundred fifty-eight thousand, three hundred fifty-three".