1896896189 has 4 divisors (see below), whose sum is σ = 1898769756. Its totient is φ = 1895022624.

The previous prime is 1896896173. The next prime is 1896896213. The reversal of 1896896189 is 9816986981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9816986981 = 64811 ⋅151471.

It can be written as a sum of positive squares in 2 ways, for example, as 395333689 + 1501562500 = 19883^2 + 38750^2 .

It is a cyclic number.

It is not a de Polignac number, because 1896896189 - 2⁴ = 1896896173 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 (1896896149) 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, 935264 + ... + 937289.

It is an arithmetic number, because the mean of its divisors is an integer number (474692439).

Almost surely, 2^1896896189 is an apocalyptic number.

It is an amenable number.

1896896189 is a deficient number, since it is larger than the sum of its proper divisors (1873567).

1896896189 is a wasteful number, since it uses less digits than its factorization.

1896896189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873566.

The product of its digits is 13436928, while the sum is 65.

The square root of 1896896189 is about 43553.3717294080. The cubic root of 1896896189 is about 1237.8875298767.

The spelling of 1896896189 in words is "one billion, eight hundred ninety-six million, eight hundred ninety-six thousand, one hundred eighty-nine".