135791787 has 4 divisors (see below), whose sum is σ = 181055720. Its totient is φ = 90527856.

The previous prime is 135791783. The next prime is 135791809. The reversal of 135791787 is 787197531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135791787 - 2² = 135791783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135791783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22631962 + ... + 22631967.

It is an arithmetic number, because the mean of its divisors is an integer number (45263930).

Almost surely, 2^135791787 is an apocalyptic number.

135791787 is a deficient number, since it is larger than the sum of its proper divisors (45263933).

135791787 is an equidigital number, since it uses as much as digits as its factorization.

135791787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45263932.

The product of its digits is 370440, while the sum is 48.

The square root of 135791787 is about 11652.9733115630. The cubic root of 135791787 is about 513.9937457288.

The spelling of 135791787 in words is "one hundred thirty-five million, seven hundred ninety-one thousand, seven hundred eighty-seven".