136118889 has 9 divisors (see below), whose sum is σ = 196666743. Its totient is φ = 90722592.

The previous prime is 136118777. The next prime is 136118891. The reversal of 136118889 is 988811631.

The square root of 136118889 is 11667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 98664489 + 37454400 = 9933^2 + 6120^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 136118889 - 2⁹ = 136118377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136118089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33057 + ... + 36945.

Almost surely, 2^136118889 is an apocalyptic number.

136118889 is the 11667-th square number.

136118889 is the 5834-th centered octagonal number.

It is an amenable number.

136118889 is a deficient number, since it is larger than the sum of its proper divisors (60547854).

136118889 is an frugal number, since it uses more digits than its factorization.

136118889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784 (or 3892 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The cubic root of 136118889 is about 514.4061260051.

Multiplying 136118889 by its product of digits (82944), we get a square (11290245129216 = 3360096²).

It can be divided in two parts, 13611 and 8889, that added together give a square (22500 = 150²).

The spelling of 136118889 in words is "one hundred thirty-six million, one hundred eighteen thousand, eight hundred eighty-nine".