138261035 has 16 divisors (see below), whose sum is σ = 181789920. Its totient is φ = 100112640.

The previous prime is 138260989. The next prime is 138261041. The reversal of 138261035 is 530162831.

138261035 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138261035 - 2²⁰ = 137212459 is a prime.

It is a super-2 number, since 2×138261035² = 38232227598542450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138260989 and 138261007.

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, 7421 + ... + 18209.

It is an arithmetic number, because the mean of its divisors is an integer number (11361870).

Almost surely, 2^138261035 is an apocalyptic number.

138261035 is a deficient number, since it is larger than the sum of its proper divisors (43528885).

138261035 is a wasteful number, since it uses less digits than its factorization.

138261035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11038.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 138261035 is about 11758.4452628738. The cubic root of 138261035 is about 517.0905502809.

The spelling of 138261035 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, thirty-five".