2812197887 has 2 divisors, whose sum is σ = 2812197888. Its totient is φ = 2812197886.

The previous prime is 2812197863. The next prime is 2812197931. The reversal of 2812197887 is 7887912182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2812197887 - 2²⁴ = 2795420671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2812197287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406098943 + 1406098944.

It is an arithmetic number, because the mean of its divisors is an integer number (1406098944).

Almost surely, 2^2812197887 is an apocalyptic number.

2812197887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2812197887 is an equidigital number, since it uses as much as digits as its factorization.

2812197887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 53.

The square root of 2812197887 is about 53030.1601638162. The cubic root of 2812197887 is about 1411.5034994286.

The spelling of 2812197887 in words is "two billion, eight hundred twelve million, one hundred ninety-seven thousand, eight hundred eighty-seven".