18225963 has 24 divisors (see below), whose sum is σ = 30201600. Its totient is φ = 10375344.

The previous prime is 18225947. The next prime is 18225967. The reversal of 18225963 is 36952281.

It is not a de Polignac number, because 18225963 - 2⁴ = 18225947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18225967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27328 + ... + 27986.

It is an arithmetic number, because the mean of its divisors is an integer number (1258400).

Almost surely, 2^18225963 is an apocalyptic number.

18225963 is a deficient number, since it is larger than the sum of its proper divisors (11975637).

18225963 is a wasteful number, since it uses less digits than its factorization.

18225963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1108 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 18225963 is about 4269.1876276406. The cubic root of 18225963 is about 263.1662314671.

The spelling of 18225963 in words is "eighteen million, two hundred twenty-five thousand, nine hundred sixty-three".