18496998 has 40 divisors (see below), whose sum is σ = 44640288. Its totient is φ = 5690736.

The previous prime is 18496979. The next prime is 18496999. The reversal of 18496998 is 89969481.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18496999) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2286 + ... + 6497.

Almost surely, 2^18496998 is an apocalyptic number.

18496998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18496998 is an abundant number, since it is smaller than the sum of its proper divisors (26143290).

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

18496998 is a wasteful number, since it uses less digits than its factorization.

18496998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810 (or 8801 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 18496998 is about 4300.8136439516. The cubic root of 18496998 is about 264.4643171883.

The spelling of 18496998 in words is "eighteen million, four hundred ninety-six thousand, nine hundred ninety-eight".