135692138 has 16 divisors (see below), whose sum is σ = 208032000. Its totient is φ = 66364272.

The previous prime is 135692119. The next prime is 135692143. The reversal of 135692138 is 831296531.

It is a happy number.

It is a super-2 number, since 2×135692138² = 36824712630022088, which contains 22 as substring.

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, 13283 + ... + 21161.

It is an arithmetic number, because the mean of its divisors is an integer number (13002000).

Almost surely, 2^135692138 is an apocalyptic number.

135692138 is a deficient number, since it is larger than the sum of its proper divisors (72339862).

135692138 is a wasteful number, since it uses less digits than its factorization.

135692138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8069.

The product of its digits is 38880, while the sum is 38.

The square root of 135692138 is about 11648.6968369857. The cubic root of 135692138 is about 513.8679857993.

The spelling of 135692138 in words is "one hundred thirty-five million, six hundred ninety-two thousand, one hundred thirty-eight".