1889896669 has 2 divisors, whose sum is σ = 1889896670. Its totient is φ = 1889896668.

The previous prime is 1889896663. The next prime is 1889896703. The reversal of 1889896669 is 9666989881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1873591225 + 16305444 = 43285^2 + 4038^2 .

It is a cyclic number.

It is not a de Polignac number, because 1889896669 - 2¹⁷ = 1889765597 is a prime.

It is a super-2 number, since 2×1889896669² = 7143418838994591122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1889896598 and 1889896607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889896663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944948334 + 944948335.

It is an arithmetic number, because the mean of its divisors is an integer number (944948335).

Almost surely, 2^1889896669 is an apocalyptic number.

It is an amenable number.

1889896669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889896669 is an equidigital number, since it uses as much as digits as its factorization.

1889896669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80621568, while the sum is 70.

The square root of 1889896669 is about 43472.9418029192. The cubic root of 1889896669 is about 1236.3630574403.

The spelling of 1889896669 in words is "one billion, eight hundred eighty-nine million, eight hundred ninety-six thousand, six hundred sixty-nine".