18845484 has 24 divisors (see below), whose sum is σ = 50254848. Its totient is φ = 5384400.

The previous prime is 18845479. The next prime is 18845501. The reversal of 18845484 is 48454881.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112092 + ... + 112259.

It is an arithmetic number, because the mean of its divisors is an integer number (2093952).

Almost surely, 2^18845484 is an apocalyptic number.

18845484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18845484 is an abundant number, since it is smaller than the sum of its proper divisors (31409364).

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

18845484 is a wasteful number, since it uses less digits than its factorization.

18845484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224365 (or 224363 counting only the distinct ones).

The product of its digits is 163840, while the sum is 42.

The square root of 18845484 is about 4341.1385603318. The cubic root of 18845484 is about 266.1148429050.

The spelling of 18845484 in words is "eighteen million, eight hundred forty-five thousand, four hundred eighty-four".