18227975 has 12 divisors (see below), whose sum is σ = 22829640. Its totient is φ = 14436000.

The previous prime is 18227947. The next prime is 18227977. The reversal of 18227975 is 57972281.

It is not a de Polignac number, because 18227975 - 2¹⁰ = 18226951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18227977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1085 + ... + 6134.

It is an arithmetic number, because the mean of its divisors is an integer number (1902470).

Almost surely, 2^18227975 is an apocalyptic number.

18227975 is a deficient number, since it is larger than the sum of its proper divisors (4601665).

18227975 is a wasteful number, since it uses less digits than its factorization.

18227975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7330 (or 7325 counting only the distinct ones).

The product of its digits is 70560, while the sum is 41.

The square root of 18227975 is about 4269.4232631586. The cubic root of 18227975 is about 263.1759149239.

The spelling of 18227975 in words is "eighteen million, two hundred twenty-seven thousand, nine hundred seventy-five".