18164667851 has 4 divisors (see below), whose sum is σ = 19816001304. Its totient is φ = 16513334400.

The previous prime is 18164667823. The next prime is 18164667967. The reversal of 18164667851 is 15876646181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18164667851 - 2³⁴ = 984798667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18164667793 and 18164667802.

It is not an unprimeable number, because it can be changed into a prime (18164067851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825666710 + ... + 825666731.

It is an arithmetic number, because the mean of its divisors is an integer number (4954000326).

Almost surely, 2^18164667851 is an apocalyptic number.

18164667851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18164667851 is a deficient number, since it is larger than the sum of its proper divisors (1651333453).

18164667851 is a wasteful number, since it uses less digits than its factorization.

18164667851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651333452.

The product of its digits is 1935360, while the sum is 53.

The spelling of 18164667851 in words is "eighteen billion, one hundred sixty-four million, six hundred sixty-seven thousand, eight hundred fifty-one".