18834930 has 96 divisors (see below), whose sum is σ = 53149824. Its totient is φ = 4790016.

The previous prime is 18834923. The next prime is 18834931. The reversal of 18834930 is 3943881.

It is a super-3 number, since 3×18834930³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18834931) 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, 55722 + ... + 56058.

It is an arithmetic number, because the mean of its divisors is an integer number (553644).

Almost surely, 2^18834930 is an apocalyptic number.

18834930 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 18834930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26574912).

18834930 is an abundant number, since it is smaller than the sum of its proper divisors (34314894).

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

18834930 is a wasteful number, since it uses less digits than its factorization.

18834930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 18834930 is about 4339.9228103735. The cubic root of 18834930 is about 266.0651563680.

The spelling of 18834930 in words is "eighteen million, eight hundred thirty-four thousand, nine hundred thirty".