490191587987 has 2 divisors, whose sum is σ = 490191587988. Its totient is φ = 490191587986.

The previous prime is 490191587971. The next prime is 490191588067. The reversal of 490191587987 is 789785191094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490191587987 - 2⁴ = 490191587971 is a prime.

It is not a weakly prime, because it can be changed into another prime (490191587387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245095793993 + 245095793994.

It is an arithmetic number, because the mean of its divisors is an integer number (245095793994).

Almost surely, 2^490191587987 is an apocalyptic number.

490191587987 is a deficient number, since it is larger than the sum of its proper divisors (1).

490191587987 is an equidigital number, since it uses as much as digits as its factorization.

490191587987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45722880, while the sum is 68.

The spelling of 490191587987 in words is "four hundred ninety billion, one hundred ninety-one million, five hundred eighty-seven thousand, nine hundred eighty-seven".