18164042 has 16 divisors (see below), whose sum is σ = 29636712. Its totient is φ = 8299200.

The previous prime is 18164033. The next prime is 18164053. The reversal of 18164042 is 24046181.

It can be written as a sum of positive squares in 4 ways, for example, as 17297281 + 866761 = 4159^2 + 931^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833 + ... + 6084.

Almost surely, 2^18164042 is an apocalyptic number.

18164042 is a deficient number, since it is larger than the sum of its proper divisors (11472670).

18164042 is a wasteful number, since it uses less digits than its factorization.

18164042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18164042 is about 4261.9293752947. The cubic root of 18164042 is about 262.8678657915.

The spelling of 18164042 in words is "eighteen million, one hundred sixty-four thousand, forty-two".