18212067 has 16 divisors (see below), whose sum is σ = 28154880. Its totient is φ = 11613096.

The previous prime is 18212057. The next prime is 18212069. The reversal of 18212067 is 76021281.

It is not a de Polignac number, because 18212067 - 2⁷ = 18211939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 18212067.

It is not an unprimeable number, because it can be changed into a prime (18212069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14043 + ... + 15284.

It is an arithmetic number, because the mean of its divisors is an integer number (1759680).

Almost surely, 2^18212067 is an apocalyptic number.

18212067 is a deficient number, since it is larger than the sum of its proper divisors (9942813).

18212067 is a wasteful number, since it uses less digits than its factorization.

18212067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29359 (or 29353 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18212067 is about 4267.5598414082. The cubic root of 18212067 is about 263.0993326200.

The spelling of 18212067 in words is "eighteen million, two hundred twelve thousand, sixty-seven".