18351666652 has 24 divisors (see below), whose sum is σ = 35270146800. Its totient is φ = 8285679360.

The previous prime is 18351666637. The next prime is 18351666653. The reversal of 18351666652 is 25666615381.

It is a super-2 number, since 2×18351666652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18351666596 and 18351666605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18351666653) 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, 1393053 + ... + 1406164.

It is an arithmetic number, because the mean of its divisors is an integer number (1469589450).

Almost surely, 2^18351666652 is an apocalyptic number.

It is an amenable number.

18351666652 is a deficient number, since it is larger than the sum of its proper divisors (16918480148).

18351666652 is a wasteful number, since it uses less digits than its factorization.

18351666652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799381 (or 2799379 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The spelling of 18351666652 in words is "eighteen billion, three hundred fifty-one million, six hundred sixty-six thousand, six hundred fifty-two".