18854960671 has 4 divisors (see below), whose sum is σ = 18862587472. Its totient is φ = 18847333872.

The previous prime is 18854960659. The next prime is 18854960693. The reversal of 18854960671 is 17606945881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17606945881 = 7 ⋅2515277983.

It is a cyclic number.

It is not a de Polignac number, because 18854960671 - 2⁷ = 18854960543 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 (18854960611) 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, 3809691 + ... + 3814636.

It is an arithmetic number, because the mean of its divisors is an integer number (4715646868).

Almost surely, 2^18854960671 is an apocalyptic number.

18854960671 is a deficient number, since it is larger than the sum of its proper divisors (7626801).

18854960671 is an equidigital number, since it uses as much as digits as its factorization.

18854960671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626800.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 18854960671 in words is "eighteen billion, eight hundred fifty-four million, nine hundred sixty thousand, six hundred seventy-one".