18916500722 has 16 divisors (see below), whose sum is σ = 32457982272. Its totient is φ = 8099647920.

The previous prime is 18916500721. The next prime is 18916500727. The reversal of 18916500722 is 22700561981.

It is a super-3 number, since 3×18916500722³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18916500722.

It is not an unprimeable number, because it can be changed into a prime (18916500721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602804 + ... + 633407.

It is an arithmetic number, because the mean of its divisors is an integer number (2028623892).

Almost surely, 2^18916500722 is an apocalyptic number.

18916500722 is a deficient number, since it is larger than the sum of its proper divisors (13541481550).

18916500722 is a wasteful number, since it uses less digits than its factorization.

18916500722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237313.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 18916500722 in words is "eighteen billion, nine hundred sixteen million, five hundred thousand, seven hundred twenty-two".