118864813 has 8 divisors (see below), whose sum is σ = 120412728. Its totient is φ = 117325824.

The previous prime is 118864793. The next prime is 118864829. The reversal of 118864813 is 318468811.

It can be written as a sum of positive squares in 4 ways, for example, as 14273284 + 104591529 = 3778^2 + 10227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118864813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118864883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26995 + ... + 31087.

It is an arithmetic number, because the mean of its divisors is an integer number (15051591).

Almost surely, 2^118864813 is an apocalyptic number.

It is an amenable number.

118864813 is a deficient number, since it is larger than the sum of its proper divisors (1547915).

118864813 is a wasteful number, since it uses less digits than its factorization.

118864813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4463.

The product of its digits is 36864, while the sum is 40.

The square root of 118864813 is about 10902.5140678653. The cubic root of 118864813 is about 491.6821445413.

The spelling of 118864813 in words is "one hundred eighteen million, eight hundred sixty-four thousand, eight hundred thirteen".