18683668701 has 6 divisors (see below), whose sum is σ = 26987521470. Its totient is φ = 12455779128.

The previous prime is 18683668697. The next prime is 18683668739. The reversal of 18683668701 is 10786638681.

It can be written as a sum of positive squares in only one way, i.e., 17252559801 + 1431108900 = 131349^2 + 37830^2 .

It is not a de Polignac number, because 18683668701 - 2² = 18683668697 is a prime.

It is a super-2 number, since 2×18683668701² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18683668781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1037981586 + ... + 1037981603.

It is an arithmetic number, because the mean of its divisors is an integer number (4497920245).

Almost surely, 2^18683668701 is an apocalyptic number.

It is an amenable number.

18683668701 is a deficient number, since it is larger than the sum of its proper divisors (8303852769).

18683668701 is a wasteful number, since it uses less digits than its factorization.

18683668701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075963195 (or 2075963192 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 18683668701 in words is "eighteen billion, six hundred eighty-three million, six hundred sixty-eight thousand, seven hundred one".