18945276 has 48 divisors (see below), whose sum is σ = 53496576. Its totient is φ = 5094144.

The previous prime is 18945263. The next prime is 18945281. The reversal of 18945276 is 67254981.

It is a Harshad number since it is a multiple of its sum of digits (42).

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5206 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (1114512).

Almost surely, 2^18945276 is an apocalyptic number.

It is an amenable number.

18945276 is an abundant number, since it is smaller than the sum of its proper divisors (34551300).

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

18945276 is a wasteful number, since it uses less digits than its factorization.

18945276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13298 (or 13296 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 18945276 is about 4352.6171437424. The cubic root of 18945276 is about 266.5837332381.

The spelling of 18945276 in words is "eighteen million, nine hundred forty-five thousand, two hundred seventy-six".