2270921987 has 2 divisors, whose sum is σ = 2270921988. Its totient is φ = 2270921986.

The previous prime is 2270921927. The next prime is 2270922079. The reversal of 2270921987 is 7891290722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2270921987 - 2⁶ = 2270921923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2270921927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135460993 + 1135460994.

It is an arithmetic number, because the mean of its divisors is an integer number (1135460994).

Almost surely, 2^2270921987 is an apocalyptic number.

2270921987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2270921987 is an equidigital number, since it uses as much as digits as its factorization.

2270921987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 2270921987 is about 47654.1917044031. The cubic root of 2270921987 is about 1314.4197369522.

The spelling of 2270921987 in words is "two billion, two hundred seventy million, nine hundred twenty-one thousand, nine hundred eighty-seven".