18046971767 has 16 divisors (see below), whose sum is σ = 19863926784. Its totient is φ = 16395088600.

The previous prime is 18046971727. The next prime is 18046971793. The reversal of 18046971767 is 76717964081.

It is not a de Polignac number, because 18046971767 - 2¹⁰ = 18046970743 is a prime.

It is a super-3 number, since 3×18046971767³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18046971727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2406698 + ... + 2414184.

It is an arithmetic number, because the mean of its divisors is an integer number (1241495424).

Almost surely, 2^18046971767 is an apocalyptic number.

18046971767 is a deficient number, since it is larger than the sum of its proper divisors (1816955017).

18046971767 is an equidigital number, since it uses as much as digits as its factorization.

18046971767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331 (or 9309 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 18046971767 in words is "eighteen billion, forty-six million, nine hundred seventy-one thousand, seven hundred sixty-seven".