2870876891 has 2 divisors, whose sum is σ = 2870876892. Its totient is φ = 2870876890.

The previous prime is 2870876881. The next prime is 2870876927. The reversal of 2870876891 is 1986780782.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2870876891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2870876821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1435438445 + 1435438446.

It is an arithmetic number, because the mean of its divisors is an integer number (1435438446).

Almost surely, 2^2870876891 is an apocalyptic number.

2870876891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2870876891 is an equidigital number, since it uses as much as digits as its factorization.

2870876891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The square root of 2870876891 is about 53580.5644893743. The cubic root of 2870876891 is about 1421.2534213274.

The spelling of 2870876891 in words is "two billion, eight hundred seventy million, eight hundred seventy-six thousand, eight hundred ninety-one".