18950984 has 48 divisors (see below), whose sum is σ = 39132720. Its totient is φ = 8598720.

The previous prime is 18950963. The next prime is 18950989. The reversal of 18950984 is 48905981.

It is not an unprimeable number, because it can be changed into a prime (18950989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144599 + ... + 144729.

It is an arithmetic number, because the mean of its divisors is an integer number (815265).

Almost surely, 2^18950984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18950984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19566360).

18950984 is an abundant number, since it is smaller than the sum of its proper divisors (20181736).

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

18950984 is a wasteful number, since it uses less digits than its factorization.

18950984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 18950984 is about 4353.2727918200. The cubic root of 18950984 is about 266.6105034500.

The spelling of 18950984 in words is "eighteen million, nine hundred fifty thousand, nine hundred eighty-four".