18514494 has 40 divisors (see below), whose sum is σ = 43298640. Its totient is φ = 5901984.

The previous prime is 18514481. The next prime is 18514501. The reversal of 18514494 is 49441581.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1242 + ... + 6210.

It is an arithmetic number, because the mean of its divisors is an integer number (1082466).

Almost surely, 2^18514494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18514494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21649320).

18514494 is an abundant number, since it is smaller than the sum of its proper divisors (24784146).

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

18514494 is a wasteful number, since it uses less digits than its factorization.

18514494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006 (or 4997 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 18514494 is about 4302.8471969151. The cubic root of 18514494 is about 264.5476750314.

The spelling of 18514494 in words is "eighteen million, five hundred fourteen thousand, four hundred ninety-four".