18751132 has 6 divisors (see below), whose sum is σ = 32814488. Its totient is φ = 9375564.

The previous prime is 18751129. The next prime is 18751133. The reversal of 18751132 is 23115781.

It is a self number, because there is not a number n which added to its sum of digits gives 18751132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18751133) 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 as a sum of consecutive naturals, namely, 2343888 + ... + 2343895.

Almost surely, 2^18751132 is an apocalyptic number.

It is an amenable number.

18751132 is a deficient number, since it is larger than the sum of its proper divisors (14063356).

18751132 is a wasteful number, since it uses less digits than its factorization.

18751132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687787 (or 4687785 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 18751132 is about 4330.2577290503. The cubic root of 18751132 is about 265.6699885414.

The spelling of 18751132 in words is "eighteen million, seven hundred fifty-one thousand, one hundred thirty-two".