196194919 has 4 divisors (see below), whose sum is σ = 197291160. Its totient is φ = 195098680.

The previous prime is 196194917. The next prime is 196194949. The reversal of 196194919 is 919491691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919491691 = 47 ⋅19563653.

It is a cyclic number.

It is not a de Polignac number, because 196194919 - 2¹ = 196194917 is a prime.

It is a super-2 number, since 2×196194919² = 76984892482833122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196194913) 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, 547852 + ... + 548209.

It is an arithmetic number, because the mean of its divisors is an integer number (49322790).

Almost surely, 2^196194919 is an apocalyptic number.

196194919 is a deficient number, since it is larger than the sum of its proper divisors (1096241).

196194919 is a wasteful number, since it uses less digits than its factorization.

196194919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096240.

The product of its digits is 157464, while the sum is 49.

The square root of 196194919 is about 14006.9596629675. The cubic root of 196194919 is about 581.0710678429.

The spelling of 196194919 in words is "one hundred ninety-six million, one hundred ninety-four thousand, nine hundred nineteen".