135797819 has 16 divisors (see below), whose sum is σ = 152891712. Its totient is φ = 119927808.

The previous prime is 135797803. The next prime is 135797821. The reversal of 135797819 is 918797531.

It is a cyclic number.

It is not a de Polignac number, because 135797819 - 2⁴ = 135797803 is a prime.

It is a super-2 number, since 2×135797819² = 36882095290313522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135797869) 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, 17447 + ... + 23999.

It is an arithmetic number, because the mean of its divisors is an integer number (9555732).

Almost surely, 2^135797819 is an apocalyptic number.

135797819 is a deficient number, since it is larger than the sum of its proper divisors (17093893).

135797819 is a wasteful number, since it uses less digits than its factorization.

135797819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6646.

The product of its digits is 476280, while the sum is 50.

The square root of 135797819 is about 11653.2321267535. The cubic root of 135797819 is about 514.0013563127.

The spelling of 135797819 in words is "one hundred thirty-five million, seven hundred ninety-seven thousand, eight hundred nineteen".