118207161 has 16 divisors (see below), whose sum is σ = 181161600. Its totient is φ = 76086864.

The previous prime is 118207157. The next prime is 118207183. The reversal of 118207161 is 161702811.

It is not a de Polignac number, because 118207161 - 2² = 118207157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (118207361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74701 + ... + 76266.

It is an arithmetic number, because the mean of its divisors is an integer number (11322600).

Almost surely, 2^118207161 is an apocalyptic number.

It is an amenable number.

118207161 is a deficient number, since it is larger than the sum of its proper divisors (62954439).

118207161 is a wasteful number, since it uses less digits than its factorization.

118207161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151005 (or 150999 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 118207161 is about 10872.3116677181. The cubic root of 118207161 is about 490.7736785042.

Adding to 118207161 its reverse (161702811), we get a palindrome (279909972).

It can be divided in two parts, 11820 and 7161, that added together give a palindrome (18981).

The spelling of 118207161 in words is "one hundred eighteen million, two hundred seven thousand, one hundred sixty-one".