136043863 has 4 divisors (see below), whose sum is σ = 139362048. Its totient is φ = 132725680.

The previous prime is 136043861. The next prime is 136043899. The reversal of 136043863 is 368340631.

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 136043863 - 2¹ = 136043861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136043861) 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, 1659031 + ... + 1659112.

It is an arithmetic number, because the mean of its divisors is an integer number (34840512).

Almost surely, 2^136043863 is an apocalyptic number.

136043863 is a deficient number, since it is larger than the sum of its proper divisors (3318185).

136043863 is an equidigital number, since it uses as much as digits as its factorization.

136043863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318184.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 136043863 is about 11663.7842486905. The cubic root of 136043863 is about 514.3115985245.

The spelling of 136043863 in words is "one hundred thirty-six million, forty-three thousand, eight hundred sixty-three".