18948882818 has 16 divisors (see below), whose sum is σ = 29944693440. Its totient is φ = 8968165200.

The previous prime is 18948882817. The next prime is 18948882829. The reversal of 18948882818 is 81828884981.

It is a happy number.

It is a super-2 number, since 2×18948882818² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18948882811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166238 + ... + 255993.

It is an arithmetic number, because the mean of its divisors is an integer number (1871543340).

Almost surely, 2^18948882818 is an apocalyptic number.

18948882818 is a deficient number, since it is larger than the sum of its proper divisors (10995810622).

18948882818 is a wasteful number, since it uses less digits than its factorization.

18948882818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423433.

The product of its digits is 18874368, while the sum is 65.

The spelling of 18948882818 in words is "eighteen billion, nine hundred forty-eight million, eight hundred eighty-two thousand, eight hundred eighteen".