135881782 has 8 divisors (see below), whose sum is σ = 215812296. Its totient is φ = 63944352.

The previous prime is 135881743. The next prime is 135881803. The reversal of 135881782 is 287188531.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1998228 + ... + 1998295.

It is an arithmetic number, because the mean of its divisors is an integer number (26976537).

Almost surely, 2^135881782 is an apocalyptic number.

135881782 is a deficient number, since it is larger than the sum of its proper divisors (79930514).

135881782 is a wasteful number, since it uses less digits than its factorization.

135881782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996542.

The product of its digits is 107520, while the sum is 43.

The square root of 135881782 is about 11656.8341328167. The cubic root of 135881782 is about 514.1072691682.

The spelling of 135881782 in words is "one hundred thirty-five million, eight hundred eighty-one thousand, seven hundred eighty-two".