18501928345 has 8 divisors (see below), whose sum is σ = 22743834120. Its totient is φ = 14440529280.

The previous prime is 18501928343. The next prime is 18501928351. The reversal of 18501928345 is 54382910581.

It can be written as a sum of positive squares in 4 ways, for example, as 50509449 + 18451418896 = 7107^2 + 135836^2 .

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

It is not a de Polignac number, because 18501928345 - 2¹ = 18501928343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18501928295 and 18501928304.

It is not an unprimeable number, because it can be changed into a prime (18501928343) 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, 45126450 + ... + 45126859.

It is an arithmetic number, because the mean of its divisors is an integer number (2842979265).

Almost surely, 2^18501928345 is an apocalyptic number.

It is an amenable number.

18501928345 is a deficient number, since it is larger than the sum of its proper divisors (4241905775).

18501928345 is an equidigital number, since it uses as much as digits as its factorization.

18501928345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90253355.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 18501928345 in words is "eighteen billion, five hundred one million, nine hundred twenty-eight thousand, three hundred forty-five".