18970984 has 16 divisors (see below), whose sum is σ = 35655300. Its totient is φ = 9462912.

The previous prime is 18970967. The next prime is 18971003. The reversal of 18970984 is 48907981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 2340900 = 4078^2 + 1530^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062 + ... + 6250.

Almost surely, 2^18970984 is an apocalyptic number.

It is an amenable number.

18970984 is a deficient number, since it is larger than the sum of its proper divisors (16684316).

18970984 is a wasteful number, since it uses less digits than its factorization.

18970984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652 (or 5648 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 18970984 is about 4355.5693083683. The cubic root of 18970984 is about 266.7042599778.

The spelling of 18970984 in words is "eighteen million, nine hundred seventy thousand, nine hundred eighty-four".