118467681 has 4 divisors (see below), whose sum is σ = 157956912. Its totient is φ = 78978452.

The previous prime is 118467607. The next prime is 118467691. The reversal of 118467681 is 186764811.

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, and also an emirpimes, since its reverse is a distinct semiprime: 186764811 = 3 ⋅62254937.

It is a cyclic number.

It is not a de Polignac number, because 118467681 - 2¹³ = 118459489 is a prime.

It is a super-2 number, since 2×118467681² = 28069182883035522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118467691) 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, 19744611 + ... + 19744616.

It is an arithmetic number, because the mean of its divisors is an integer number (39489228).

Almost surely, 2^118467681 is an apocalyptic number.

It is an amenable number.

118467681 is a deficient number, since it is larger than the sum of its proper divisors (39489231).

118467681 is an equidigital number, since it uses as much as digits as its factorization.

118467681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39489230.

The product of its digits is 64512, while the sum is 42.

The square root of 118467681 is about 10884.2859664748. The cubic root of 118467681 is about 491.1339571421.

The spelling of 118467681 in words is "one hundred eighteen million, four hundred sixty-seven thousand, six hundred eighty-one".