135921892 has 18 divisors (see below), whose sum is σ = 242456018. Its totient is φ = 66673152.

The previous prime is 135921883. The next prime is 135921893. The reversal of 135921892 is 298129531.

It can be written as a sum of positive squares in 3 ways, for example, as 12845056 + 123076836 = 3584^2 + 11094^2 .

It is a super-3 number, since 3×135921892³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (135921893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5188 + ... + 17284.

Almost surely, 2^135921892 is an apocalyptic number.

It is an amenable number.

135921892 is a deficient number, since it is larger than the sum of its proper divisors (106534126).

135921892 is a wasteful number, since it uses less digits than its factorization.

135921892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207 (or 12152 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 135921892 is about 11658.5544558491. The cubic root of 135921892 is about 514.1578494437.

The spelling of 135921892 in words is "one hundred thirty-five million, nine hundred twenty-one thousand, eight hundred ninety-two".