18345476 has 12 divisors (see below), whose sum is σ = 32321100. Its totient is φ = 9110880.

The previous prime is 18345461. The next prime is 18345479. The reversal of 18345476 is 67454381.

It can be written as a sum of positive squares in 2 ways, for example, as 2979076 + 15366400 = 1726^2 + 3920^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18345479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14795 + ... + 15986.

It is an arithmetic number, because the mean of its divisors is an integer number (2693425).

Almost surely, 2^18345476 is an apocalyptic number.

It is an amenable number.

18345476 is a deficient number, since it is larger than the sum of its proper divisors (13975624).

18345476 is a wasteful number, since it uses less digits than its factorization.

18345476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30934 (or 30932 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 18345476 is about 4283.1619161549. The cubic root of 18345476 is about 263.7401981937.

The spelling of 18345476 in words is "eighteen million, three hundred forty-five thousand, four hundred seventy-six".