18249876 has 18 divisors (see below), whose sum is σ = 46131722. Its totient is φ = 6083280.

The previous prime is 18249841. The next prime is 18249877. The reversal of 18249876 is 67894281.

It can be written as a sum of positive squares in only one way, i.e., 11088900 + 7160976 = 3330^2 + 2676^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249877) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 253435 + ... + 253506.

Almost surely, 2^18249876 is an apocalyptic number.

It is an amenable number.

18249876 is an abundant number, since it is smaller than the sum of its proper divisors (27881846).

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

18249876 is a wasteful number, since it uses less digits than its factorization.

18249876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506951 (or 506946 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 18249876 is about 4271.9873595319. The cubic root of 18249876 is about 263.2812751159.

The spelling of 18249876 in words is "eighteen million, two hundred forty-nine thousand, eight hundred seventy-six".