118461813 has 8 divisors (see below), whose sum is σ = 158751648. Its totient is φ = 78573264.

The previous prime is 118461803. The next prime is 118461821. The reversal of 118461813 is 318164811.

It is a happy number.

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

It is not a de Polignac number, because 118461813 - 2¹⁰ = 118460789 is a prime.

It is a super-2 number, since 2×118461813² = 28066402278493938, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118461803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99631 + ... + 100812.

It is an arithmetic number, because the mean of its divisors is an integer number (19843956).

Almost surely, 2^118461813 is an apocalyptic number.

It is an amenable number.

118461813 is a deficient number, since it is larger than the sum of its proper divisors (40289835).

118461813 is a wasteful number, since it uses less digits than its factorization.

118461813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200643.

The product of its digits is 4608, while the sum is 33.

The square root of 118461813 is about 10884.0164002082. The cubic root of 118461813 is about 491.1258479779.

The spelling of 118461813 in words is "one hundred eighteen million, four hundred sixty-one thousand, eight hundred thirteen".