138793190 has 32 divisors (see below), whose sum is σ = 254469600. Its totient is φ = 54496000.

The previous prime is 138793183. The next prime is 138793223. The reversal of 138793190 is 91397831.

It is a super-2 number, since 2×138793190² = 38527099180752200, which contains 22 as substring.

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, 131786 + ... + 132834.

It is an arithmetic number, because the mean of its divisors is an integer number (7952175).

Almost surely, 2^138793190 is an apocalyptic number.

138793190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138793190 is a deficient number, since it is larger than the sum of its proper divisors (115676410).

138793190 is a wasteful number, since it uses less digits than its factorization.

138793190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 138793190 is about 11781.0521601426. The cubic root of 138793190 is about 517.7531135172.

The spelling of 138793190 in words is "one hundred thirty-eight million, seven hundred ninety-three thousand, one hundred ninety".