898452817813 has 2 divisors, whose sum is σ = 898452817814. Its totient is φ = 898452817812.

The previous prime is 898452817739. The next prime is 898452817819. The reversal of 898452817813 is 318718254898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 897570549604 + 882268209 = 947402^2 + 29703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898452817813 is a prime.

It is a super-2 number, since 2×898452817813² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898452817819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449226408906 + 449226408907.

It is an arithmetic number, because the mean of its divisors is an integer number (449226408907).

Almost surely, 2^898452817813 is an apocalyptic number.

It is an amenable number.

898452817813 is a deficient number, since it is larger than the sum of its proper divisors (1).

898452817813 is an equidigital number, since it uses as much as digits as its factorization.

898452817813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30965760, while the sum is 64.

The spelling of 898452817813 in words is "eight hundred ninety-eight billion, four hundred fifty-two million, eight hundred seventeen thousand, eight hundred thirteen".