136641379 has 8 divisors (see below), whose sum is σ = 156349440. Its totient is φ = 116980296.

The previous prime is 136641353. The next prime is 136641383. The reversal of 136641379 is 973146631.

136641379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 136641379 - 2⁷ = 136641251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136641779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5269 + ... + 17350.

It is an arithmetic number, because the mean of its divisors is an integer number (19543680).

Almost surely, 2^136641379 is an apocalyptic number.

136641379 is a deficient number, since it is larger than the sum of its proper divisors (19708061).

136641379 is an equidigital number, since it uses as much as digits as its factorization.

136641379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23489.

The product of its digits is 81648, while the sum is 40.

The square root of 136641379 is about 11689.3703423238. The cubic root of 136641379 is about 515.0634653303.

The spelling of 136641379 in words is "one hundred thirty-six million, six hundred forty-one thousand, three hundred seventy-nine".