2287990643 has 2 divisors, whose sum is σ = 2287990644. Its totient is φ = 2287990642.

The previous prime is 2287990637. The next prime is 2287990687. The reversal of 2287990643 is 3460997822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2287990643 - 2⁸ = 2287990387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2287990591 and 2287990600.

It is not a weakly prime, because it can be changed into another prime (2287990043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143995321 + 1143995322.

It is an arithmetic number, because the mean of its divisors is an integer number (1143995322).

Almost surely, 2^2287990643 is an apocalyptic number.

2287990643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287990643 is an equidigital number, since it uses as much as digits as its factorization.

2287990643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 2287990643 is about 47832.9451633495. The cubic root of 2287990643 is about 1317.7046586066.

The spelling of 2287990643 in words is "two billion, two hundred eighty-seven million, nine hundred ninety thousand, six hundred forty-three".