2811979898 has 96 divisors (see below), whose sum is σ = 5538484224. Its totient is φ = 1042481664.

The previous prime is 2811979897. The next prime is 2811979987. The reversal of 2811979898 is 8989791182.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2811979898.

It is not an unprimeable number, because it can be changed into a prime (2811979897) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8343986 + ... + 8344322.

It is an arithmetic number, because the mean of its divisors is an integer number (57692544).

Almost surely, 2^2811979898 is an apocalyptic number.

2811979898 is a deficient number, since it is larger than the sum of its proper divisors (2726504326).

2811979898 is a wasteful number, since it uses less digits than its factorization.

2811979898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 505 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 62.

The square root of 2811979898 is about 53028.1047935904. The cubic root of 2811979898 is about 1411.4670273405.

The spelling of 2811979898 in words is "two billion, eight hundred eleven million, nine hundred seventy-nine thousand, eight hundred ninety-eight".