18882385 has 8 divisors (see below), whose sum is σ = 22737960. Its totient is φ = 15053184.

The previous prime is 18882377. The next prime is 18882389. The reversal of 18882385 is 58328881.

It can be written as a sum of positive squares in 4 ways, for example, as 7403841 + 11478544 = 2721^2 + 3388^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18882385 - 2³ = 18882377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18882389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4980 + ... + 7909.

It is an arithmetic number, because the mean of its divisors is an integer number (2842245).

Almost surely, 2^18882385 is an apocalyptic number.

It is an amenable number.

18882385 is a deficient number, since it is larger than the sum of its proper divisors (3855575).

18882385 is a wasteful number, since it uses less digits than its factorization.

18882385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13187.

The product of its digits is 122880, while the sum is 43.

The square root of 18882385 is about 4345.3866341213. The cubic root of 18882385 is about 266.2884212078.

The spelling of 18882385 in words is "eighteen million, eight hundred eighty-two thousand, three hundred eighty-five".