136079819 has 4 divisors (see below), whose sum is σ = 136145520. Its totient is φ = 136014120.

The previous prime is 136079809. The next prime is 136079857. The reversal of 136079819 is 918970631.

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

It is a cyclic number.

It is not a de Polignac number, because 136079819 - 2¹⁶ = 136014283 is a prime.

It is a super-2 number, since 2×136079819² = 37035434278145522, which contains 22 as substring.

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 136079819.

It is not an unprimeable number, because it can be changed into a prime (136079809) 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 3 ways as a sum of consecutive naturals, for example, 29639 + ... + 33920.

It is an arithmetic number, because the mean of its divisors is an integer number (34036380).

Almost surely, 2^136079819 is an apocalyptic number.

136079819 is a deficient number, since it is larger than the sum of its proper divisors (65701).

136079819 is an equidigital number, since it uses as much as digits as its factorization.

136079819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65700.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 136079819 is about 11665.3254991020. The cubic root of 136079819 is about 514.3569048899.

The spelling of 136079819 in words is "one hundred thirty-six million, seventy-nine thousand, eight hundred nineteen".