136143658 has 12 divisors (see below), whose sum is σ = 237556962. Its totient is φ = 58347240.

The previous prime is 136143653. The next prime is 136143673. The reversal of 136143658 is 856341631.

It can be written as a sum of positive squares in only one way, i.e., 110103049 + 26040609 = 10493^2 + 5103^2 .

It is a super-3 number, since 3×136143658³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (136143653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694513 + ... + 694708.

Almost surely, 2^136143658 is an apocalyptic number.

136143658 is a deficient number, since it is larger than the sum of its proper divisors (101413304).

136143658 is a wasteful number, since it uses less digits than its factorization.

136143658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389237 (or 1389230 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 136143658 is about 11668.0614499582. The cubic root of 136143658 is about 514.4373255755.

The spelling of 136143658 in words is "one hundred thirty-six million, one hundred forty-three thousand, six hundred fifty-eight".