2287421887 has 2 divisors, whose sum is σ = 2287421888. Its totient is φ = 2287421886.

The previous prime is 2287421833. The next prime is 2287421933. The reversal of 2287421887 is 7881247822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2287421887 - 2²³ = 2279033279 is a prime.

It is a super-3 number, since 3×2287421887³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2287421887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2287421827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143710943 + 1143710944.

It is an arithmetic number, because the mean of its divisors is an integer number (1143710944).

Almost surely, 2^2287421887 is an apocalyptic number.

2287421887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287421887 is an equidigital number, since it uses as much as digits as its factorization.

2287421887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 802816, while the sum is 49.

The square root of 2287421887 is about 47826.9995609175. Note that the first 3 decimals coincide. The cubic root of 2287421887 is about 1317.5954631513.

The spelling of 2287421887 in words is "two billion, two hundred eighty-seven million, four hundred twenty-one thousand, eight hundred eighty-seven".