2168476987 has 2 divisors, whose sum is σ = 2168476988. Its totient is φ = 2168476986.

The previous prime is 2168476979. The next prime is 2168477009. The reversal of 2168476987 is 7896748612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168476987 - 2³ = 2168476979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2168476957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084238493 + 1084238494.

It is an arithmetic number, because the mean of its divisors is an integer number (1084238494).

Almost surely, 2^2168476987 is an apocalyptic number.

2168476987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168476987 is an equidigital number, since it uses as much as digits as its factorization.

2168476987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 58.

The square root of 2168476987 is about 46566.9087120887. The cubic root of 2168476987 is about 1294.3496358179.

The spelling of 2168476987 in words is "two billion, one hundred sixty-eight million, four hundred seventy-six thousand, nine hundred eighty-seven".