118921623 has 8 divisors (see below), whose sum is σ = 160569600. Its totient is φ = 78277368.

The previous prime is 118921603. The next prime is 118921643. The reversal of 118921623 is 326129811.

It is an interprime number because it is at equal distance from previous prime (118921603) and next prime (118921643).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118921623 - 2²⁰ = 117873047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118921603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250653 + ... + 251126.

It is an arithmetic number, because the mean of its divisors is an integer number (20071200).

Almost surely, 2^118921623 is an apocalyptic number.

118921623 is a deficient number, since it is larger than the sum of its proper divisors (41647977).

118921623 is an equidigital number, since it uses as much as digits as its factorization.

118921623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501861.

The product of its digits is 5184, while the sum is 33.

The square root of 118921623 is about 10905.1191190193. The cubic root of 118921623 is about 491.7604632439.

The spelling of 118921623 in words is "one hundred eighteen million, nine hundred twenty-one thousand, six hundred twenty-three".