18812798 has 12 divisors (see below), whose sum is σ = 29006712. Its totient is φ = 9150840.

The previous prime is 18812797. The next prime is 18812803. The reversal of 18812798 is 89721881.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18812791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 698 + ... + 6173.

It is an arithmetic number, because the mean of its divisors is an integer number (2417226).

Almost surely, 2^18812798 is an apocalyptic number.

18812798 is a deficient number, since it is larger than the sum of its proper divisors (10193914).

18812798 is an equidigital number, since it uses as much as digits as its factorization.

18812798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947 (or 6910 counting only the distinct ones).

The product of its digits is 64512, while the sum is 44.

The square root of 18812798 is about 4337.3722459572. The cubic root of 18812798 is about 265.9609021624.

The spelling of 18812798 in words is "eighteen million, eight hundred twelve thousand, seven hundred ninety-eight".