136443863 has 2 divisors, whose sum is σ = 136443864. Its totient is φ = 136443862.

The previous prime is 136443821. The next prime is 136443907. The reversal of 136443863 is 368344631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136443863 - 2⁶ = 136443799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136443163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68221931 + 68221932.

It is an arithmetic number, because the mean of its divisors is an integer number (68221932).

Almost surely, 2^136443863 is an apocalyptic number.

136443863 is a deficient number, since it is larger than the sum of its proper divisors (1).

136443863 is an equidigital number, since it uses as much as digits as its factorization.

136443863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 38.

The square root of 136443863 is about 11680.9187566732. The cubic root of 136443863 is about 514.8151697938.

The spelling of 136443863 in words is "one hundred thirty-six million, four hundred forty-three thousand, eight hundred sixty-three".