18490452 has 12 divisors (see below), whose sum is σ = 43144416. Its totient is φ = 6163480.

The previous prime is 18490447. The next prime is 18490471. The reversal of 18490452 is 25409481.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770424 + ... + 770447.

It is an arithmetic number, because the mean of its divisors is an integer number (3595368).

Almost surely, 2^18490452 is an apocalyptic number.

18490452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18490452 is an abundant number, since it is smaller than the sum of its proper divisors (24653964).

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

18490452 is a wasteful number, since it uses less digits than its factorization.

18490452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540878 (or 1540876 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18490452 is about 4300.0525578183. The cubic root of 18490452 is about 264.4331159508.

The spelling of 18490452 in words is "eighteen million, four hundred ninety thousand, four hundred fifty-two".