494951333869 has 2 divisors, whose sum is σ = 494951333870. Its totient is φ = 494951333868.

The previous prime is 494951333777. The next prime is 494951333893. The reversal of 494951333869 is 968333159494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476875875844 + 18075458025 = 690562^2 + 134445^2 .

It is a cyclic number.

It is not a de Polignac number, because 494951333869 - 2⁷ = 494951333741 is a prime.

It is a super-2 number, since 2×494951333869² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 494951333869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494951334869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247475666934 + 247475666935.

It is an arithmetic number, because the mean of its divisors is an integer number (247475666935).

Almost surely, 2^494951333869 is an apocalyptic number.

It is an amenable number.

494951333869 is a deficient number, since it is larger than the sum of its proper divisors (1).

494951333869 is an equidigital number, since it uses as much as digits as its factorization.

494951333869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75582720, while the sum is 64.

The spelling of 494951333869 in words is "four hundred ninety-four billion, nine hundred fifty-one million, three hundred thirty-three thousand, eight hundred sixty-nine".