18818522 has 16 divisors (see below), whose sum is σ = 29008800. Its totient is φ = 9152400.

The previous prime is 18818521. The next prime is 18818539. The reversal of 18818522 is 22581881.

It is not an unprimeable number, because it can be changed into a prime (18818521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11129 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (1813050).

Almost surely, 2^18818522 is an apocalyptic number.

18818522 is a deficient number, since it is larger than the sum of its proper divisors (10190278).

18818522 is a wasteful number, since it uses less digits than its factorization.

18818522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its digits is 10240, while the sum is 35.

The square root of 18818522 is about 4338.0320422975. The cubic root of 18818522 is about 265.9878732670.

The spelling of 18818522 in words is "eighteen million, eight hundred eighteen thousand, five hundred twenty-two".