197938481 has 4 divisors (see below), whose sum is σ = 213164532. Its totient is φ = 182712432.

The previous prime is 197938471. The next prime is 197938537. The reversal of 197938481 is 184839791.

197938481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 181818256 = 4015^2 + 13484^2 .

It is a cyclic number.

It is not a de Polignac number, because 197938481 - 2¹⁸ = 197676337 is a prime.

It is a super-2 number, since 2×197938481² = 78359284521174722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197938421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7613006 + ... + 7613031.

It is an arithmetic number, because the mean of its divisors is an integer number (53291133).

Almost surely, 2^197938481 is an apocalyptic number.

It is an amenable number.

197938481 is a deficient number, since it is larger than the sum of its proper divisors (15226051).

197938481 is a wasteful number, since it uses less digits than its factorization.

197938481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15226050.

The product of its digits is 435456, while the sum is 50.

The square root of 197938481 is about 14069.0611271684. The cubic root of 197938481 is about 582.7872980897.

The spelling of 197938481 in words is "one hundred ninety-seven million, nine hundred thirty-eight thousand, four hundred eighty-one".