18712274851 has 8 divisors (see below), whose sum is σ = 18747263744. Its totient is φ = 18677320200.

The previous prime is 18712274807. The next prime is 18712274863. The reversal of 18712274851 is 15847221781.

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 18712274851 - 2²¹ = 18710177699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18712274551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252576 + ... + 1267426.

It is an arithmetic number, because the mean of its divisors is an integer number (2343407968).

Almost surely, 2^18712274851 is an apocalyptic number.

18712274851 is a deficient number, since it is larger than the sum of its proper divisors (34988893).

18712274851 is a wasteful number, since it uses less digits than its factorization.

18712274851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17121.

The product of its digits is 250880, while the sum is 46.

It can be divided in two parts, 1871 and 2274851, that added together give a palindrome (2276722).

The spelling of 18712274851 in words is "eighteen billion, seven hundred twelve million, two hundred seventy-four thousand, eight hundred fifty-one".