118947919 has 4 divisors (see below), whose sum is σ = 119151144. Its totient is φ = 118744696.

The previous prime is 118947901. The next prime is 118947943. The reversal of 118947919 is 919749811.

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

It is a cyclic number.

It is not a de Polignac number, because 118947919 - 2⁵ = 118947887 is a prime.

It is a super-2 number, since 2×118947919² = 28297214868861122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118947979) 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, 100732 + ... + 101905.

It is an arithmetic number, because the mean of its divisors is an integer number (29787786).

Almost surely, 2^118947919 is an apocalyptic number.

118947919 is a deficient number, since it is larger than the sum of its proper divisors (203225).

118947919 is an equidigital number, since it uses as much as digits as its factorization.

118947919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203224.

The product of its digits is 163296, while the sum is 49.

The square root of 118947919 is about 10906.3247246724. The cubic root of 118947919 is about 491.7967066671.

The spelling of 118947919 in words is "one hundred eighteen million, nine hundred forty-seven thousand, nine hundred nineteen".