196019549 has 4 divisors (see below), whose sum is σ = 213839520. Its totient is φ = 178199580.

The previous prime is 196019543. The next prime is 196019567. The reversal of 196019549 is 945910691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 945910691 = 11 ⋅85991881.

It is a cyclic number.

It is not a de Polignac number, because 196019549 - 2¹⁶ = 195954013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196019543) 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, 8909969 + ... + 8909990.

It is an arithmetic number, because the mean of its divisors is an integer number (53459880).

Almost surely, 2^196019549 is an apocalyptic number.

It is an amenable number.

196019549 is a deficient number, since it is larger than the sum of its proper divisors (17819971).

196019549 is a wasteful number, since it uses less digits than its factorization.

196019549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17819970.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 196019549 is about 14000.6981611632. The cubic root of 196019549 is about 580.8978849511.

The spelling of 196019549 in words is "one hundred ninety-six million, nineteen thousand, five hundred forty-nine".