136643794 has 8 divisors (see below), whose sum is σ = 234246528. Its totient is φ = 58561620.

The previous prime is 136643791. The next prime is 136643917. The reversal of 136643794 is 497346631.

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

It is a self number, because there is not a number n which added to its sum of digits gives 136643794.

It is not an unprimeable number, because it can be changed into a prime (136643791) 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, 4880122 + ... + 4880149.

It is an arithmetic number, because the mean of its divisors is an integer number (29280816).

Almost surely, 2^136643794 is an apocalyptic number.

136643794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

136643794 is a deficient number, since it is larger than the sum of its proper divisors (97602734).

136643794 is an equidigital number, since it uses as much as digits as its factorization.

136643794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9760280.

The product of its digits is 326592, while the sum is 43.

The square root of 136643794 is about 11689.4736408446. The cubic root of 136643794 is about 515.0664997234.

The spelling of 136643794 in words is "one hundred thirty-six million, six hundred forty-three thousand, seven hundred ninety-four".