18949276 has 6 divisors (see below), whose sum is σ = 33161240. Its totient is φ = 9474636.

The previous prime is 18949253. The next prime is 18949297. The reversal of 18949276 is 67294981.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2368656 + ... + 2368663.

Almost surely, 2^18949276 is an apocalyptic number.

It is an amenable number.

18949276 is a deficient number, since it is larger than the sum of its proper divisors (14211964).

18949276 is a wasteful number, since it uses less digits than its factorization.

18949276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737323 (or 4737321 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 18949276 is about 4353.0766131553. The cubic root of 18949276 is about 266.6024935858.

The spelling of 18949276 in words is "eighteen million, nine hundred forty-nine thousand, two hundred seventy-six".