118651 has 4 divisors (see below), whose sum is σ = 127792. Its totient is φ = 109512.

The previous prime is 118633. The next prime is 118661. The reversal of 118651 is 156811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156811 = 191 ⋅821.

It is not a de Polignac number, because 118651 - 2⁵ = 118619 is a prime.

It is a Duffinian number.

118651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (118621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4551 + ... + 4576.

It is an arithmetic number, because the mean of its divisors is an integer number (31948).

2¹¹⁸⁶⁵¹ is an apocalyptic number.

118651 is a deficient number, since it is larger than the sum of its proper divisors (9141).

118651 is an equidigital number, since it uses as much as digits as its factorization.

118651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9140.

The product of its digits is 240, while the sum is 22.

The square root of 118651 is about 344.4575445538. The cubic root of 118651 is about 49.1387156397.

The spelling of 118651 in words is "one hundred eighteen thousand, six hundred fifty-one".