135382891 has 16 divisors (see below), whose sum is σ = 157248000. Its totient is φ = 114164928.

The previous prime is 135382873. The next prime is 135382903. The reversal of 135382891 is 198283531.

It is a cyclic number.

It is not a de Polignac number, because 135382891 - 2⁷ = 135382763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135382801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128535 + ... + 129583.

It is an arithmetic number, because the mean of its divisors is an integer number (9828000).

Almost surely, 2^135382891 is an apocalyptic number.

135382891 is a deficient number, since it is larger than the sum of its proper divisors (21865109).

135382891 is a wasteful number, since it uses less digits than its factorization.

135382891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its digits is 51840, while the sum is 40.

The square root of 135382891 is about 11635.4153772008. The cubic root of 135382891 is about 513.4773146558.

The spelling of 135382891 in words is "one hundred thirty-five million, three hundred eighty-two thousand, eight hundred ninety-one".