2818856423 has 4 divisors (see below), whose sum is σ = 2818979568. Its totient is φ = 2818733280.

The previous prime is 2818856419. The next prime is 2818856431. The reversal of 2818856423 is 3246588182.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3246588182 = 2 ⋅1623294091.

It is a cyclic number.

It is not a de Polignac number, because 2818856423 - 2² = 2818856419 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 (2818856483) 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, 15986 + ... + 76767.

It is an arithmetic number, because the mean of its divisors is an integer number (704744892).

Almost surely, 2^2818856423 is an apocalyptic number.

2818856423 is a deficient number, since it is larger than the sum of its proper divisors (123145).

2818856423 is an equidigital number, since it uses as much as digits as its factorization.

2818856423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123144.

The product of its digits is 737280, while the sum is 47.

The square root of 2818856423 is about 53092.9036971986. The cubic root of 2818856423 is about 1412.6166428644.

The spelling of 2818856423 in words is "two billion, eight hundred eighteen million, eight hundred fifty-six thousand, four hundred twenty-three".