18254812 has 6 divisors (see below), whose sum is σ = 31945928. Its totient is φ = 9127404.

The previous prime is 18254809. The next prime is 18254813. The reversal of 18254812 is 21845281.

It is a super-2 number, since 2×18254812² = 666476322310688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18254813) 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, 2281848 + ... + 2281855.

Almost surely, 2^18254812 is an apocalyptic number.

It is an amenable number.

18254812 is a deficient number, since it is larger than the sum of its proper divisors (13691116).

18254812 is a wasteful number, since it uses less digits than its factorization.

18254812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563707 (or 4563705 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 18254812 is about 4272.5650375389. The cubic root of 18254812 is about 263.3050093270.

The spelling of 18254812 in words is "eighteen million, two hundred fifty-four thousand, eight hundred twelve".