18809746686353 has 8 divisors (see below), whose sum is σ = 21496912435008. Its totient is φ = 16122595707504.

The previous prime is 18809746686287. The next prime is 18809746686427. The reversal of 18809746686353 is 35368664790881.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18809746686353 - 2¹² = 18809746682257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18809746686953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813851 + ... + 6187232.

It is an arithmetic number, because the mean of its divisors is an integer number (2687114054376).

Almost surely, 2^{18809746686353} is an apocalyptic number.

It is an amenable number.

18809746686353 is a deficient number, since it is larger than the sum of its proper divisors (2687165748655).

18809746686353 is an equidigital number, since it uses as much as digits as its factorization.

18809746686353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384903.

The product of its (nonzero) digits is 1254113280, while the sum is 74.

The spelling of 18809746686353 in words is "eighteen trillion, eight hundred nine billion, seven hundred forty-six million, six hundred eighty-six thousand, three hundred fifty-three".