196197381 has 6 divisors (see below), whose sum is σ = 283396230. Its totient is φ = 130798248.

The previous prime is 196197371. The next prime is 196197403. The reversal of 196197381 is 183791691.

196197381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 108868356 + 87329025 = 10434^2 + 9345^2 .

It is not a de Polignac number, because 196197381 - 2⁵ = 196197349 is a prime.

It is a super-2 number, since 2×196197381² = 76986824622518322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196197311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10899846 + ... + 10899863.

It is an arithmetic number, because the mean of its divisors is an integer number (47232705).

Almost surely, 2^196197381 is an apocalyptic number.

It is an amenable number.

196197381 is a deficient number, since it is larger than the sum of its proper divisors (87198849).

196197381 is a wasteful number, since it uses less digits than its factorization.

196197381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21799715 (or 21799712 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 196197381 is about 14007.0475475740. The cubic root of 196197381 is about 581.0734984036.

It can be divided in two parts, 19619 and 7381, that added together give a cube (27000 = 30³).

The spelling of 196197381 in words is "one hundred ninety-six million, one hundred ninety-seven thousand, three hundred eighty-one".