18348932506 has 8 divisors (see below), whose sum is σ = 27525253140. Its totient is φ = 9173848128.

The previous prime is 18348932489. The next prime is 18348932521. The reversal of 18348932506 is 60523984381.

It can be written as a sum of positive squares in 2 ways, for example, as 17448032281 + 900900225 = 132091^2 + 30015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×18348932506³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18348932506.

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 in 3 ways as a sum of consecutive naturals, for example, 271021 + ... + 331888.

Almost surely, 2^18348932506 is an apocalyptic number.

18348932506 is a deficient number, since it is larger than the sum of its proper divisors (9176320634).

18348932506 is a wasteful number, since it uses less digits than its factorization.

18348932506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618128.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 18348932506 in words is "eighteen billion, three hundred forty-eight million, nine hundred thirty-two thousand, five hundred six".