18984375 has 48 divisors (see below), whose sum is σ = 35546784. Its totient is φ = 10125000.

The previous prime is 18984347. The next prime is 18984379. The reversal of 18984375 is 57348981.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 18984375 - 2⁶ = 18984311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (241920) is a multiple of the sum of its prime divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 18984375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18984379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3796873 + ... + 3796877.

It is an arithmetic number, because the mean of its divisors is an integer number (740558).

Almost surely, 2^18984375 is an apocalyptic number.

18984375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18984375 is a deficient number, since it is larger than the sum of its proper divisors (16562409).

18984375 is an frugal number, since it uses more digits than its factorization.

18984375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 8 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 18984375 is about 4357.1062644833. The cubic root of 18984375 is about 266.7669978368.

18984375 divided by its sum of digits (45) gives a cube (421875 = 75³).

The spelling of 18984375 in words is "eighteen million, nine hundred eighty-four thousand, three hundred seventy-five".