118912643 has 4 divisors (see below), whose sum is σ = 118956720. Its totient is φ = 118868568.

The previous prime is 118912613. The next prime is 118912657. The reversal of 118912643 is 346219811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118912643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118912613) 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, 17708 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (29739180).

Almost surely, 2^118912643 is an apocalyptic number.

118912643 is a deficient number, since it is larger than the sum of its proper divisors (44077).

118912643 is an equidigital number, since it uses as much as digits as its factorization.

118912643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44076.

The product of its digits is 10368, while the sum is 35.

The square root of 118912643 is about 10904.7073780088. The cubic root of 118912643 is about 491.7480850069.

The spelling of 118912643 in words is "one hundred eighteen million, nine hundred twelve thousand, six hundred forty-three".