18798694 has 4 divisors (see below), whose sum is σ = 28198044. Its totient is φ = 9399346.

The previous prime is 18798691. The next prime is 18798707. The reversal of 18798694 is 49689781.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49689781 = 433 ⋅114757.

It is a super-2 number, since 2×18798694² = 706781792211272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18798691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4699672 + ... + 4699675.

It is an arithmetic number, because the mean of its divisors is an integer number (7049511).

Almost surely, 2^18798694 is an apocalyptic number.

18798694 is a deficient number, since it is larger than the sum of its proper divisors (9399350).

18798694 is an equidigital number, since it uses as much as digits as its factorization.

18798694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399349.

The product of its digits is 870912, while the sum is 52.

The square root of 18798694 is about 4335.7460719004. The cubic root of 18798694 is about 265.8944217030.

The spelling of 18798694 in words is "eighteen million, seven hundred ninety-eight thousand, six hundred ninety-four".