18451066 has 16 divisors (see below), whose sum is σ = 28703808. Its totient is φ = 8888800.

The previous prime is 18451057. The next prime is 18451067. The reversal of 18451066 is 66015481.

It is not an unprimeable number, because it can be changed into a prime (18451067) 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, 5451 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (1793988).

Almost surely, 2^18451066 is an apocalyptic number.

18451066 is a deficient number, since it is larger than the sum of its proper divisors (10252742).

18451066 is a wasteful number, since it uses less digits than its factorization.

18451066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 18451066 is about 4295.4704049731. The cubic root of 18451066 is about 264.2452285961.

The spelling of 18451066 in words is "eighteen million, four hundred fifty-one thousand, sixty-six".