490574123891 has 2 divisors, whose sum is σ = 490574123892. Its totient is φ = 490574123890.

The previous prime is 490574123869. The next prime is 490574123903. The reversal of 490574123891 is 198321475094.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 490574123891 - 2³⁰ = 489500382067 is a prime.

It is not a weakly prime, because it can be changed into another prime (490574123801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245287061945 + 245287061946.

It is an arithmetic number, because the mean of its divisors is an integer number (245287061946).

Almost surely, 2^490574123891 is an apocalyptic number.

490574123891 is a deficient number, since it is larger than the sum of its proper divisors (1).

490574123891 is an equidigital number, since it uses as much as digits as its factorization.

490574123891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 490574123891 in words is "four hundred ninety billion, five hundred seventy-four million, one hundred twenty-three thousand, eight hundred ninety-one".