18298994 has 32 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 7564032.

The previous prime is 18298993. The next prime is 18299003. The reversal of 18298994 is 49989281.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18298993) 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, 67892 + ... + 68160.

It is an arithmetic number, because the mean of its divisors is an integer number (1015740).

Almost surely, 2^18298994 is an apocalyptic number.

18298994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18298994 is a deficient number, since it is larger than the sum of its proper divisors (14204686).

18298994 is a wasteful number, since it uses less digits than its factorization.

18298994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434.

The product of its digits is 373248, while the sum is 50.

The square root of 18298994 is about 4277.7323431931. The cubic root of 18298994 is about 263.5172633006.

The spelling of 18298994 in words is "eighteen million, two hundred ninety-eight thousand, nine hundred ninety-four".