18783270568 has 8 divisors (see below), whose sum is σ = 35218632330. Its totient is φ = 9391635280.

The previous prime is 18783270533. The next prime is 18783270587. The reversal of 18783270568 is 86507238781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18366212484 + 417058084 = 135522^2 + 20422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18783270568² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1173954403 + ... + 1173954418.

Almost surely, 2^18783270568 is an apocalyptic number.

It is an amenable number.

18783270568 is a deficient number, since it is larger than the sum of its proper divisors (16435361762).

18783270568 is a wasteful number, since it uses less digits than its factorization.

18783270568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347908827 (or 2347908823 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 18783270568 in words is "eighteen billion, seven hundred eighty-three million, two hundred seventy thousand, five hundred sixty-eight".