1890625673 has 2 divisors, whose sum is σ = 1890625674. Its totient is φ = 1890625672.

The previous prime is 1890625669. The next prime is 1890625697. The reversal of 1890625673 is 3765260981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1519986169 + 370639504 = 38987^2 + 19252^2 .

It is an emirp because it is prime and its reverse (3765260981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1890625673 - 2² = 1890625669 is a prime.

It is not a weakly prime, because it can be changed into another prime (1890625663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945312836 + 945312837.

It is an arithmetic number, because the mean of its divisors is an integer number (945312837).

Almost surely, 2^1890625673 is an apocalyptic number.

It is an amenable number.

1890625673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890625673 is an equidigital number, since it uses as much as digits as its factorization.

1890625673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 1890625673 is about 43481.3255662704. The cubic root of 1890625673 is about 1236.5220075325.

The spelling of 1890625673 in words is "one billion, eight hundred ninety million, six hundred twenty-five thousand, six hundred seventy-three".