2012863891 has 2 divisors, whose sum is σ = 2012863892. Its totient is φ = 2012863890.

The previous prime is 2012863843. The next prime is 2012863913. The reversal of 2012863891 is 1983682102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2012863891 - 2²⁷ = 1878646163 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012864891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006431945 + 1006431946.

It is an arithmetic number, because the mean of its divisors is an integer number (1006431946).

Almost surely, 2^2012863891 is an apocalyptic number.

2012863891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012863891 is an equidigital number, since it uses as much as digits as its factorization.

2012863891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2012863891 is about 44864.9516995171. The cubic root of 2012863891 is about 1262.6165269172.

The spelling of 2012863891 in words is "two billion, twelve million, eight hundred sixty-three thousand, eight hundred ninety-one".