138005190 has 48 divisors (see below), whose sum is σ = 368520048. Its totient is φ = 35805888.

The previous prime is 138005173. The next prime is 138005209. The reversal of 138005190 is 91500831.

It is a super-2 number, since 2×138005190² = 38090864933872200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 17392 + ... + 24051.

It is an arithmetic number, because the mean of its divisors is an integer number (7677501).

Almost surely, 2^138005190 is an apocalyptic number.

138005190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138005190 is an abundant number, since it is smaller than the sum of its proper divisors (230514858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138005190 is a wasteful number, since it uses less digits than its factorization.

138005190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41493 (or 41490 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 138005190 is about 11747.5610234636. The cubic root of 138005190 is about 516.7714034401.

The spelling of 138005190 in words is "one hundred thirty-eight million, five thousand, one hundred ninety".