136478794 has 4 divisors (see below), whose sum is σ = 204718194. Its totient is φ = 68239396.

The previous prime is 136478789. The next prime is 136478807. The reversal of 136478794 is 497874631.

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

It can be written as a sum of positive squares in only one way, i.e., 126000625 + 10478169 = 11225^2 + 3237^2 .

It is a super-2 number, since 2×136478794² = 37252922423388872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34119697 + ... + 34119700.

Almost surely, 2^136478794 is an apocalyptic number.

136478794 is a deficient number, since it is larger than the sum of its proper divisors (68239400).

136478794 is an equidigital number, since it uses as much as digits as its factorization.

136478794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68239399.

The product of its digits is 1016064, while the sum is 49.

The square root of 136478794 is about 11682.4138772772. The cubic root of 136478794 is about 514.8590986642.

The spelling of 136478794 in words is "one hundred thirty-six million, four hundred seventy-eight thousand, seven hundred ninety-four".