18982395 has 12 divisors (see below), whose sum is σ = 32902896. Its totient is φ = 10123920.

The previous prime is 18982391. The next prime is 18982417. The reversal of 18982395 is 59328981.

It is a happy number.

18982395 is a `hidden beast` number, since 189 + 82 + 395 = 666.

It is not a de Polignac number, because 18982395 - 2² = 18982391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 421831 = 18982395 / (1 + 8 + 9 + 8 + 2 + 3 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 18982395.

It is not an unprimeable number, because it can be changed into a prime (18982391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210871 + ... + 210960.

It is an arithmetic number, because the mean of its divisors is an integer number (2741908).

Almost surely, 2^18982395 is an apocalyptic number.

18982395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18982395 is a deficient number, since it is larger than the sum of its proper divisors (13920501).

18982395 is a wasteful number, since it uses less digits than its factorization.

18982395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421842 (or 421839 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 18982395 is about 4356.8790435356. The cubic root of 18982395 is about 266.7577232444.

The spelling of 18982395 in words is "eighteen million, nine hundred eighty-two thousand, three hundred ninety-five".