18927942 has 64 divisors (see below), whose sum is σ = 44388864. Its totient is φ = 5322240.

The previous prime is 18927913. The next prime is 18927973. The reversal of 18927942 is 24972981.

It is a junction number, because it is equal to n+sod(n) for n = 18927894 and 18927903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55998 + ... + 56334.

It is an arithmetic number, because the mean of its divisors is an integer number (693576).

Almost surely, 2^18927942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18927942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22194432).

18927942 is an abundant number, since it is smaller than the sum of its proper divisors (25460922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18927942 is a wasteful number, since it uses less digits than its factorization.

18927942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413.

The product of its digits is 72576, while the sum is 42.

The square root of 18927942 is about 4350.6254722741. The cubic root of 18927942 is about 266.5024047411.

The spelling of 18927942 in words is "eighteen million, nine hundred twenty-seven thousand, nine hundred forty-two".