18757680145 has 8 divisors (see below), whose sum is σ = 22605823656. Its totient is φ = 14941739136.

The previous prime is 18757680091. The next prime is 18757680169. The reversal of 18757680145 is 54108675781.

It can be written as a sum of positive squares in 4 ways, for example, as 194435136 + 18563245009 = 13944^2 + 136247^2 .

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 18757680145 - 2¹¹ = 18757678097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18757680092 and 18757680101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8049342 + ... + 8051671.

It is an arithmetic number, because the mean of its divisors is an integer number (2825727957).

Almost surely, 2^18757680145 is an apocalyptic number.

It is an amenable number.

18757680145 is a deficient number, since it is larger than the sum of its proper divisors (3848143511).

18757680145 is a wasteful number, since it uses less digits than its factorization.

18757680145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16101251.

The product of its (nonzero) digits is 1881600, while the sum is 52.

The spelling of 18757680145 in words is "eighteen billion, seven hundred fifty-seven million, six hundred eighty thousand, one hundred forty-five".