118921903 has 4 divisors (see below), whose sum is σ = 120148000. Its totient is φ = 117695808.

The previous prime is 118921871. The next prime is 118921909. The reversal of 118921903 is 309129811.

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 118921903 - 2⁵ = 118921871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118921909) 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, 612903 + ... + 613096.

It is an arithmetic number, because the mean of its divisors is an integer number (30037000).

Almost surely, 2^118921903 is an apocalyptic number.

118921903 is a deficient number, since it is larger than the sum of its proper divisors (1226097).

118921903 is an equidigital number, since it uses as much as digits as its factorization.

118921903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226096.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 118921903 is about 10905.1319570191. The cubic root of 118921903 is about 491.7608491923.

The spelling of 118921903 in words is "one hundred eighteen million, nine hundred twenty-one thousand, nine hundred three".