197916444013 has 2 divisors, whose sum is σ = 197916444014. Its totient is φ = 197916444012.

The previous prime is 197916443987. The next prime is 197916444041. The reversal of 197916444013 is 310444619791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166004908969 + 31911535044 = 407437^2 + 178638^2 .

It is a cyclic number.

It is not a de Polignac number, because 197916444013 - 2¹⁷ = 197916312941 is a prime.

It is a super-3 number, since 3×197916444013³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197916444083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98958222006 + 98958222007.

It is an arithmetic number, because the mean of its divisors is an integer number (98958222007).

Almost surely, 2^197916444013 is an apocalyptic number.

It is an amenable number.

197916444013 is a deficient number, since it is larger than the sum of its proper divisors (1).

197916444013 is an equidigital number, since it uses as much as digits as its factorization.

197916444013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 197916444013 in words is "one hundred ninety-seven billion, nine hundred sixteen million, four hundred forty-four thousand, thirteen".