197419381 has 4 divisors (see below), whose sum is σ = 197679564. Its totient is φ = 197159200.

The previous prime is 197419361. The next prime is 197419393. The reversal of 197419381 is 183914791.

197419381 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 51251281 + 146168100 = 7159^2 + 12090^2 .

It is a cyclic number.

It is not a de Polignac number, because 197419381 - 2⁵ = 197419349 is a prime.

It is a super-3 number, since 3×197419381³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197419301) 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, 128950 + ... + 130471.

It is an arithmetic number, because the mean of its divisors is an integer number (49419891).

Almost surely, 2^197419381 is an apocalyptic number.

It is an amenable number.

197419381 is a deficient number, since it is larger than the sum of its proper divisors (260183).

197419381 is an equidigital number, since it uses as much as digits as its factorization.

197419381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260182.

The product of its digits is 54432, while the sum is 43.

The square root of 197419381 is about 14050.6007344882. The cubic root of 197419381 is about 582.2773926361.

The spelling of 197419381 in words is "one hundred ninety-seven million, four hundred nineteen thousand, three hundred eighty-one".