138700110 has 64 divisors (see below), whose sum is σ = 353839104. Its totient is φ = 34675200.

The previous prime is 138700103. The next prime is 138700157. The reversal of 138700110 is 11007831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219495 + ... + 220125.

It is an arithmetic number, because the mean of its divisors is an integer number (5528736).

Almost surely, 2^138700110 is an apocalyptic number.

138700110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138700110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176919552).

138700110 is an abundant number, since it is smaller than the sum of its proper divisors (215138994).

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

138700110 is a wasteful number, since it uses less digits than its factorization.

138700110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 138700110 is about 11777.1010864304. The cubic root of 138700110 is about 517.6373459808.

Adding to 138700110 its reverse (11007831), we get a palindrome (149707941).

The spelling of 138700110 in words is "one hundred thirty-eight million, seven hundred thousand, one hundred ten".