18049276 has 12 divisors (see below), whose sum is σ = 36098608. Its totient is φ = 7735392.

The previous prime is 18049271. The next prime is 18049279. The reversal of 18049276 is 67294081.

18049276 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18049271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322281 + ... + 322336.

Almost surely, 2^18049276 is an apocalyptic number.

It is an amenable number.

18049276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18049276 is a wasteful number, since it uses less digits than its factorization.

18049276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644628 (or 644626 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 18049276 is about 4248.4439504364. The cubic root of 18049276 is about 262.3130690311.

The spelling of 18049276 in words is "eighteen million, forty-nine thousand, two hundred seventy-six".