136883861 has 2 divisors, whose sum is σ = 136883862. Its totient is φ = 136883860.

The previous prime is 136883837. The next prime is 136883897. The reversal of 136883861 is 168388631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120318961 + 16564900 = 10969^2 + 4070^2 .

It is a cyclic number.

It is not a de Polignac number, because 136883861 - 2⁶ = 136883797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136883801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68441930 + 68441931.

It is an arithmetic number, because the mean of its divisors is an integer number (68441931).

Almost surely, 2^136883861 is an apocalyptic number.

It is an amenable number.

136883861 is a deficient number, since it is larger than the sum of its proper divisors (1).

136883861 is an equidigital number, since it uses as much as digits as its factorization.

136883861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 44.

The square root of 136883861 is about 11699.7376466312. The cubic root of 136883861 is about 515.3679602417.

The spelling of 136883861 in words is "one hundred thirty-six million, eight hundred eighty-three thousand, eight hundred sixty-one".