135881877 has 16 divisors (see below), whose sum is σ = 185001408. Its totient is φ = 88682880.

The previous prime is 135881857. The next prime is 135881887. The reversal of 135881877 is 778188531.

It is a happy number.

It is not a de Polignac number, because 135881877 - 2⁸ = 135881621 is a prime.

It is a super-4 number, since 4×135881877⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135881807) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 120438 + ... + 121560.

It is an arithmetic number, because the mean of its divisors is an integer number (11562588).

Almost surely, 2^135881877 is an apocalyptic number.

It is an amenable number.

135881877 is a deficient number, since it is larger than the sum of its proper divisors (49119531).

135881877 is a wasteful number, since it uses less digits than its factorization.

135881877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940.

The product of its digits is 376320, while the sum is 48.

The square root of 135881877 is about 11656.8382076788. The cubic root of 135881877 is about 514.1073889787.

The spelling of 135881877 in words is "one hundred thirty-five million, eight hundred eighty-one thousand, eight hundred seventy-seven".