138758403 has 32 divisors (see below), whose sum is σ = 226243584. Its totient is φ = 73838592.

The previous prime is 138758341. The next prime is 138758419. The reversal of 138758403 is 304857831.

It is not a de Polignac number, because 138758403 - 2¹² = 138754307 is a prime.

It is a super-2 number, since 2×138758403² = 38507788806220818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138758423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32626 + ... + 36632.

It is an arithmetic number, because the mean of its divisors is an integer number (7070112).

Almost surely, 2^138758403 is an apocalyptic number.

138758403 is a deficient number, since it is larger than the sum of its proper divisors (87485181).

138758403 is a wasteful number, since it uses less digits than its factorization.

138758403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 138758403 is about 11779.5756714748. The cubic root of 138758403 is about 517.7098535116.

The spelling of 138758403 in words is "one hundred thirty-eight million, seven hundred fifty-eight thousand, four hundred three".