18963330 has 96 divisors (see below), whose sum is σ = 51352704. Its totient is φ = 4465152.

The previous prime is 18963323. The next prime is 18963337. The reversal of 18963330 is 3336981.

It is an interprime number because it is at equal distance from previous prime (18963323) and next prime (18963337).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18963291 and 18963300.

It is not an unprimeable number, because it can be changed into a prime (18963337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184059 + ... + 184161.

It is an arithmetic number, because the mean of its divisors is an integer number (534924).

Almost surely, 2^18963330 is an apocalyptic number.

18963330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18963330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25676352).

18963330 is an abundant number, since it is smaller than the sum of its proper divisors (32389374).

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

18963330 is a wasteful number, since it uses less digits than its factorization.

18963330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 18963330 is about 4354.6905745414. The cubic root of 18963330 is about 266.6683871417.

The spelling of 18963330 in words is "eighteen million, nine hundred sixty-three thousand, three hundred thirty".