138754090 has 16 divisors (see below), whose sum is σ = 249910272. Its totient is φ = 55467664.

The previous prime is 138754087. The next prime is 138754111. The reversal of 138754090 is 90457831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18927 + ... + 25213.

It is an arithmetic number, because the mean of its divisors is an integer number (15619392).

Almost surely, 2^138754090 is an apocalyptic number.

138754090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138754090 is a deficient number, since it is larger than the sum of its proper divisors (111156182).

138754090 is a wasteful number, since it uses less digits than its factorization.

138754090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 138754090 is about 11779.3925989416. The cubic root of 138754090 is about 517.7044894984.

The spelling of 138754090 in words is "one hundred thirty-eight million, seven hundred fifty-four thousand, ninety".