135881843 has 8 divisors (see below), whose sum is σ = 137156448. Its totient is φ = 134613504.

The previous prime is 135881819. The next prime is 135881857. The reversal of 135881843 is 348188531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135881843 - 2²² = 131687539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135881843.

It is not an unprimeable number, because it can be changed into a prime (135881803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49421 + ... + 52097.

It is an arithmetic number, because the mean of its divisors is an integer number (17144556).

Almost surely, 2^135881843 is an apocalyptic number.

135881843 is a deficient number, since it is larger than the sum of its proper divisors (1274605).

135881843 is a wasteful number, since it uses less digits than its factorization.

135881843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133.

The product of its digits is 92160, while the sum is 41.

The square root of 135881843 is about 11656.8367493072. The cubic root of 135881843 is about 514.1073460991.

The spelling of 135881843 in words is "one hundred thirty-five million, eight hundred eighty-one thousand, eight hundred forty-three".