18745514927 has 4 divisors (see below), whose sum is σ = 19009536336. Its totient is φ = 18481493520.

The previous prime is 18745514897. The next prime is 18745514929. The reversal of 18745514927 is 72941554781.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18745514927 - 2¹⁰ = 18745513903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18745514929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132010598 + ... + 132010739.

It is an arithmetic number, because the mean of its divisors is an integer number (4752384084).

Almost surely, 2^18745514927 is an apocalyptic number.

18745514927 is a deficient number, since it is larger than the sum of its proper divisors (264021409).

18745514927 is an equidigital number, since it uses as much as digits as its factorization.

18745514927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264021408.

The product of its digits is 2822400, while the sum is 53.

The spelling of 18745514927 in words is "eighteen billion, seven hundred forty-five million, five hundred fourteen thousand, nine hundred twenty-seven".