18944030 has 32 divisors (see below), whose sum is σ = 39151296. Its totient is φ = 6465024.

The previous prime is 18944027. The next prime is 18944033. The reversal of 18944030 is 3044981.

It is an interprime number because it is at equal distance from previous prime (18944027) and next prime (18944033).

It is a junction number, because it is equal to n+sod(n) for n = 18943984 and 18944002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18944033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18902 + ... + 19878.

It is an arithmetic number, because the mean of its divisors is an integer number (1223478).

Almost surely, 2^18944030 is an apocalyptic number.

18944030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18944030 is an abundant number, since it is smaller than the sum of its proper divisors (20207266).

18944030 is a wasteful number, since it uses less digits than its factorization.

18944030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18944030 is about 4352.4740091125. The cubic root of 18944030 is about 266.5778888504.

The spelling of 18944030 in words is "eighteen million, nine hundred forty-four thousand, thirty".