136518349 has 4 divisors (see below), whose sum is σ = 148929120. Its totient is φ = 124107580.

The previous prime is 136518331. The next prime is 136518379. The reversal of 136518349 is 943815631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136518349 - 2¹¹ = 136516301 is a prime.

It is a super-2 number, since 2×136518349² = 37274519227371602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136518379) 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, 6205369 + ... + 6205390.

It is an arithmetic number, because the mean of its divisors is an integer number (37232280).

Almost surely, 2^136518349 is an apocalyptic number.

It is an amenable number.

136518349 is a deficient number, since it is larger than the sum of its proper divisors (12410771).

136518349 is a wasteful number, since it uses less digits than its factorization.

136518349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12410770.

The product of its digits is 77760, while the sum is 40.

The square root of 136518349 is about 11684.1066838676. The cubic root of 136518349 is about 514.9088335813.

The spelling of 136518349 in words is "one hundred thirty-six million, five hundred eighteen thousand, three hundred forty-nine".