18698635742 has 32 divisors (see below), whose sum is σ = 28858164192. Its totient is φ = 9081805824.

The previous prime is 18698635729. The next prime is 18698635771. The reversal of 18698635742 is 24753689681.

It is a super-2 number, since 2×18698635742² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19620338 + ... + 19621290.

It is an arithmetic number, because the mean of its divisors is an integer number (901817631).

Almost surely, 2^18698635742 is an apocalyptic number.

18698635742 is a deficient number, since it is larger than the sum of its proper divisors (10159528450).

18698635742 is a wasteful number, since it uses less digits than its factorization.

18698635742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012.

The product of its digits is 17418240, while the sum is 59.

The spelling of 18698635742 in words is "eighteen billion, six hundred ninety-eight million, six hundred thirty-five thousand, seven hundred forty-two".