138883245 has 16 divisors (see below), whose sum is σ = 222409152. Its totient is φ = 74005760.

The previous prime is 138883231. The next prime is 138883253. The reversal of 138883245 is 542388831.

It is not a de Polignac number, because 138883245 - 2⁴ = 138883229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138883197 and 138883206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17014 + ... + 23816.

It is an arithmetic number, because the mean of its divisors is an integer number (13900572).

Almost surely, 2^138883245 is an apocalyptic number.

138883245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138883245 is a deficient number, since it is larger than the sum of its proper divisors (83525907).

138883245 is a wasteful number, since it uses less digits than its factorization.

138883245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172.

The product of its digits is 184320, while the sum is 42.

The square root of 138883245 is about 11784.8735674168. The cubic root of 138883245 is about 517.8650694806.

It can be divided in two parts, 138883 and 245, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 138883245 in words is "one hundred thirty-eight million, eight hundred eighty-three thousand, two hundred forty-five".