1896650869 has 2 divisors, whose sum is σ = 1896650870. Its totient is φ = 1896650868.

The previous prime is 1896650867. The next prime is 1896650911. The reversal of 1896650869 is 9680566981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1854335844 + 42315025 = 43062^2 + 6505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1896650869 - 2¹ = 1896650867 is a prime.

It is a super-2 number, since 2×1896650869² = 7194569037756910322, which contains 22 as substring.

Together with 1896650867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1896650867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948325434 + 948325435.

It is an arithmetic number, because the mean of its divisors is an integer number (948325435).

Almost surely, 2^1896650869 is an apocalyptic number.

It is an amenable number.

1896650869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1896650869 is an equidigital number, since it uses as much as digits as its factorization.

1896650869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 1896650869 is about 43550.5553236695. Note that the first 3 decimals coincide. The cubic root of 1896650869 is about 1237.8341634594.

The spelling of 1896650869 in words is "one billion, eight hundred ninety-six million, six hundred fifty thousand, eight hundred sixty-nine".