1896236149 has 2 divisors, whose sum is σ = 1896236150. Its totient is φ = 1896236148.

The previous prime is 1896236143. The next prime is 1896236161. The reversal of 1896236149 is 9416326981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1295496049 + 600740100 = 35993^2 + 24510^2 .

It is an emirp because it is prime and its reverse (9416326981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1896236149 - 2¹¹ = 1896234101 is a prime.

It is a super-3 number, since 3×1896236149³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1896236143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948118074 + 948118075.

It is an arithmetic number, because the mean of its divisors is an integer number (948118075).

Almost surely, 2^1896236149 is an apocalyptic number.

It is an amenable number.

1896236149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1896236149 is an equidigital number, since it uses as much as digits as its factorization.

1896236149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 1896236149 is about 43545.7937004253. The cubic root of 1896236149 is about 1237.7439356419.

The spelling of 1896236149 in words is "one billion, eight hundred ninety-six million, two hundred thirty-six thousand, one hundred forty-nine".