490771643 has 2 divisors, whose sum is σ = 490771644. Its totient is φ = 490771642.

The previous prime is 490771607. The next prime is 490771651. The reversal of 490771643 is 346177094.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 490771643 - 2⁶ = 490771579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490771643.

It is not a weakly prime, because it can be changed into another prime (490771693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245385821 + 245385822.

It is an arithmetic number, because the mean of its divisors is an integer number (245385822).

Almost surely, 2^490771643 is an apocalyptic number.

490771643 is a deficient number, since it is larger than the sum of its proper divisors (1).

490771643 is an equidigital number, since it uses as much as digits as its factorization.

490771643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 490771643 is about 22153.3664033257. The cubic root of 490771643 is about 788.7871379762.

The spelling of 490771643 in words is "four hundred ninety million, seven hundred seventy-one thousand, six hundred forty-three".