196530149 has 4 divisors (see below), whose sum is σ = 208090764. Its totient is φ = 184969536.

The previous prime is 196530107. The next prime is 196530151. The reversal of 196530149 is 941035691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941035691 = 1553 ⋅605947.

It can be written as a sum of positive squares in 2 ways, for example, as 182520100 + 14010049 = 13510^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 196530149 - 2¹⁶ = 196464613 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 (196536149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5780282 + ... + 5780315.

It is an arithmetic number, because the mean of its divisors is an integer number (52022691).

Almost surely, 2^196530149 is an apocalyptic number.

It is an amenable number.

196530149 is a deficient number, since it is larger than the sum of its proper divisors (11560615).

196530149 is a wasteful number, since it uses less digits than its factorization.

196530149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560614.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 196530149 is about 14018.9211068470. The cubic root of 196530149 is about 581.4018300864.

The spelling of 196530149 in words is "one hundred ninety-six million, five hundred thirty thousand, one hundred forty-nine".