138092210 has 16 divisors (see below), whose sum is σ = 249163992. Its totient is φ = 55104000.

The previous prime is 138092183. The next prime is 138092219. The reversal of 138092210 is 12290831.

138092210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38551681 + 99540529 = 6209^2 + 9977^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138092210.

It is not an unprimeable number, because it can be changed into a prime (138092219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12191 + ... + 20610.

Almost surely, 2^138092210 is an apocalyptic number.

138092210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138092210 is a deficient number, since it is larger than the sum of its proper divisors (111071782).

138092210 is a wasteful number, since it uses less digits than its factorization.

138092210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33229.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 138092210 is about 11751.2641873119. The cubic root of 138092210 is about 516.8799983872.

The spelling of 138092210 in words is "one hundred thirty-eight million, ninety-two thousand, two hundred ten".