18008153786 has 32 divisors (see below), whose sum is σ = 31129090560. Its totient is φ = 7653407616.

The previous prime is 18008153777. The next prime is 18008153789. The reversal of 18008153786 is 68735180081.

It is a happy number.

It is a super-2 number, since 2×18008153786² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18008153786.

It is not an unprimeable number, because it can be changed into a prime (18008153789) 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 15 ways as a sum of consecutive naturals, for example, 2045951 + ... + 2054733.

It is an arithmetic number, because the mean of its divisors is an integer number (972784080).

Almost surely, 2^18008153786 is an apocalyptic number.

18008153786 is a deficient number, since it is larger than the sum of its proper divisors (13120936774).

18008153786 is a wasteful number, since it uses less digits than its factorization.

18008153786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 18008153786 in words is "eighteen billion, eight million, one hundred fifty-three thousand, seven hundred eighty-six".