2861902889 has 2 divisors, whose sum is σ = 2861902890. Its totient is φ = 2861902888.

The previous prime is 2861902867. The next prime is 2861902937. The reversal of 2861902889 is 9882091682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1689867664 + 1172035225 = 41108^2 + 34235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2861902889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2861902889.

It is not a weakly prime, because it can be changed into another prime (2861902829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1430951444 + 1430951445.

It is an arithmetic number, because the mean of its divisors is an integer number (1430951445).

Almost surely, 2^2861902889 is an apocalyptic number.

It is an amenable number.

2861902889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861902889 is an equidigital number, since it uses as much as digits as its factorization.

2861902889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 2861902889 is about 53496.7558736041. The cubic root of 2861902889 is about 1419.7709888236.

The spelling of 2861902889 in words is "two billion, eight hundred sixty-one million, nine hundred two thousand, eight hundred eighty-nine".