18982449 has 6 divisors (see below), whose sum is σ = 27419106. Its totient is φ = 12654960.

The previous prime is 18982441. The next prime is 18982471. The reversal of 18982449 is 94428981.

It can be written as a sum of positive squares in only one way, i.e., 18766224 + 216225 = 4332^2 + 465^2 .

It is not a de Polignac number, because 18982449 - 2³ = 18982441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18982441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1054572 + ... + 1054589.

It is an arithmetic number, because the mean of its divisors is an integer number (4569851).

Almost surely, 2^18982449 is an apocalyptic number.

It is an amenable number.

18982449 is a deficient number, since it is larger than the sum of its proper divisors (8436657).

18982449 is a wasteful number, since it uses less digits than its factorization.

18982449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109167 (or 2109164 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18982449 is about 4356.8852406278. The cubic root of 18982449 is about 266.7579761963.

The spelling of 18982449 in words is "eighteen million, nine hundred eighty-two thousand, four hundred forty-nine".