18969016 has 32 divisors (see below), whose sum is σ = 40143600. Its totient is φ = 8323840.

The previous prime is 18969007. The next prime is 18969047. The reversal of 18969016 is 61096981.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18969016.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1165 + ... + 6268.

Almost surely, 2^18969016 is an apocalyptic number.

It is an amenable number.

18969016 is an abundant number, since it is smaller than the sum of its proper divisors (21174584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18969016 is a wasteful number, since it uses less digits than its factorization.

18969016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479 (or 7475 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 18969016 is about 4355.3433848550. The cubic root of 18969016 is about 266.6950372593.

The spelling of 18969016 in words is "eighteen million, nine hundred sixty-nine thousand, sixteen".