1890964853 has 2 divisors, whose sum is σ = 1890964854. Its totient is φ = 1890964852.

The previous prime is 1890964837. The next prime is 1890964897. The reversal of 1890964853 is 3584690981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1576328209 + 314636644 = 39703^2 + 17738^2 .

It is an emirp because it is prime and its reverse (3584690981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1890964853 - 2⁴ = 1890964837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1890964795 and 1890964804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1890963853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945482426 + 945482427.

It is an arithmetic number, because the mean of its divisors is an integer number (945482427).

Almost surely, 2^1890964853 is an apocalyptic number.

It is an amenable number.

1890964853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890964853 is an equidigital number, since it uses as much as digits as its factorization.

1890964853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 1890964853 is about 43485.2256864329. The cubic root of 1890964853 is about 1236.5959475095.

The spelling of 1890964853 in words is "one billion, eight hundred ninety million, nine hundred sixty-four thousand, eight hundred fifty-three".