18074898 has 12 divisors (see below), whose sum is σ = 39162318. Its totient is φ = 6024960.

The previous prime is 18074897. The next prime is 18074899. The reversal of 18074898 is 89847081.

It is an interprime number because it is at equal distance from previous prime (18074897) and next prime (18074899).

It can be written as a sum of positive squares in only one way, i.e., 17413929 + 660969 = 4173^2 + 813^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18074897) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 502063 + ... + 502098.

Almost surely, 2^18074898 is an apocalyptic number.

18074898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18074898 is an abundant number, since it is smaller than the sum of its proper divisors (21087420).

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

18074898 is a wasteful number, since it uses less digits than its factorization.

18074898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004169 (or 1004166 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 18074898 is about 4251.4583380294. The cubic root of 18074898 is about 262.4371332444.

It can be divided in two parts, 180 and 74898, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 18074898 in words is "eighteen million, seventy-four thousand, eight hundred ninety-eight".