136138618 has 64 divisors (see below), whose sum is σ = 272160000. Its totient is φ = 49443840.

The previous prime is 136138589. The next prime is 136138621. The reversal of 136138618 is 816831631.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389908 + ... + 390256.

It is an arithmetic number, because the mean of its divisors is an integer number (4252500).

Almost surely, 2^136138618 is an apocalyptic number.

136138618 is a deficient number, since it is larger than the sum of its proper divisors (136021382).

136138618 is a wasteful number, since it uses less digits than its factorization.

136138618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its digits is 20736, while the sum is 37.

The square root of 136138618 is about 11667.8454737796. The cubic root of 136138618 is about 514.4309773887.

The spelling of 136138618 in words is "one hundred thirty-six million, one hundred thirty-eight thousand, six hundred eighteen".