2818971819 has 12 divisors (see below), whose sum is σ = 4078792536. Its totient is φ = 1876109472.

The previous prime is 2818971787. The next prime is 2818971853. The reversal of 2818971819 is 9181798182.

It is not a de Polignac number, because 2818971819 - 2⁵ = 2818971787 is a prime.

It is a super-2 number, since 2×2818971819² = 15893204232632337522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2818971619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261514 + ... + 272079.

It is an arithmetic number, because the mean of its divisors is an integer number (339899378).

Almost surely, 2^2818971819 is an apocalyptic number.

2818971819 is a deficient number, since it is larger than the sum of its proper divisors (1259820717).

2818971819 is a wasteful number, since it uses less digits than its factorization.

2818971819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534186 (or 534183 counting only the distinct ones).

The product of its digits is 580608, while the sum is 54.

The square root of 2818971819 is about 53093.9904226458. The cubic root of 2818971819 is about 1412.6359187765.

The spelling of 2818971819 in words is "two billion, eight hundred eighteen million, nine hundred seventy-one thousand, eight hundred nineteen".