197603881 has 2 divisors, whose sum is σ = 197603882. Its totient is φ = 197603880.

The previous prime is 197603873. The next prime is 197603897. The reversal of 197603881 is 188306791.

197603881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196448256 + 1155625 = 14016^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 197603881 - 2³ = 197603873 is a prime.

It is a super-2 number, since 2×197603881² = 78094587572524322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197603381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98801940 + 98801941.

It is an arithmetic number, because the mean of its divisors is an integer number (98801941).

Almost surely, 2^197603881 is an apocalyptic number.

It is an amenable number.

197603881 is a deficient number, since it is larger than the sum of its proper divisors (1).

197603881 is an equidigital number, since it uses as much as digits as its factorization.

197603881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 197603881 is about 14057.1647568064. The cubic root of 197603881 is about 582.4587269596.

The spelling of 197603881 in words is "one hundred ninety-seven million, six hundred three thousand, eight hundred eighty-one".