18668703352 has 32 divisors (see below), whose sum is σ = 37712908800. Its totient is φ = 8612555904.

The previous prime is 18668703271. The next prime is 18668703407. The reversal of 18668703352 is 25330786681.

It is a junction number, because it is equal to n+sod(n) for n = 18668703296 and 18668703305.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 207049 + ... + 283207.

It is an arithmetic number, because the mean of its divisors is an integer number (1178528400).

Almost surely, 2^18668703352 is an apocalyptic number.

It is an amenable number.

18668703352 is an abundant number, since it is smaller than the sum of its proper divisors (19044205448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18668703352 is a wasteful number, since it uses less digits than its factorization.

18668703352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78535 (or 78531 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 18668703352 in words is "eighteen billion, six hundred sixty-eight million, seven hundred three thousand, three hundred fifty-two".