18379242 has 48 divisors (see below), whose sum is σ = 45801600. Its totient is φ = 5217696.

The previous prime is 18379237. The next prime is 18379247. The reversal of 18379242 is 24297381.

It is an interprime number because it is at equal distance from previous prime (18379237) and next prime (18379247).

It is a junction number, because it is equal to n+sod(n) for n = 18379197 and 18379206.

It is not an unprimeable number, because it can be changed into a prime (18379247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24708 + ... + 25440.

It is an arithmetic number, because the mean of its divisors is an integer number (954200).

Almost surely, 2^18379242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18379242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22900800).

18379242 is an abundant number, since it is smaller than the sum of its proper divisors (27422358).

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

18379242 is a wasteful number, since it uses less digits than its factorization.

18379242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 944 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 18379242 is about 4287.1018182450. The cubic root of 18379242 is about 263.9019091505.

The spelling of 18379242 in words is "eighteen million, three hundred seventy-nine thousand, two hundred forty-two".