18996514727 has 4 divisors (see below), whose sum is σ = 19091974800. Its totient is φ = 18901054656.

The previous prime is 18996514721. The next prime is 18996514741. The reversal of 18996514727 is 72741569981.

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 18996514727 - 2¹⁶ = 18996449191 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 (18996514721) 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, 47729738 + ... + 47730135.

It is an arithmetic number, because the mean of its divisors is an integer number (4772993700).

Almost surely, 2^18996514727 is an apocalyptic number.

18996514727 is a deficient number, since it is larger than the sum of its proper divisors (95460073).

18996514727 is an equidigital number, since it uses as much as digits as its factorization.

18996514727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95460072.

The product of its digits is 7620480, while the sum is 59.

The spelling of 18996514727 in words is "eighteen billion, nine hundred ninety-six million, five hundred fourteen thousand, seven hundred twenty-seven".