118643147 has 16 divisors (see below), whose sum is σ = 141086400. Its totient is φ = 97614720.

The previous prime is 118643143. The next prime is 118643167. The reversal of 118643147 is 741346811.

It is a happy number.

It is not a de Polignac number, because 118643147 - 2² = 118643143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118643143) 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, 35129 + ... + 38357.

It is an arithmetic number, because the mean of its divisors is an integer number (8817900).

Almost surely, 2^118643147 is an apocalyptic number.

118643147 is a deficient number, since it is larger than the sum of its proper divisors (22443253).

118643147 is a wasteful number, since it uses less digits than its factorization.

118643147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446.

The product of its digits is 16128, while the sum is 35.

The square root of 118643147 is about 10892.3435035809. The cubic root of 118643147 is about 491.3763152226.

Adding to 118643147 its reverse (741346811), we get a palindrome (859989958).

The spelling of 118643147 in words is "one hundred eighteen million, six hundred forty-three thousand, one hundred forty-seven".