1896435641 has 2 divisors, whose sum is σ = 1896435642. Its totient is φ = 1896435640.

The previous prime is 1896435617. The next prime is 1896435659. The reversal of 1896435641 is 1465346981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1738556416 + 157879225 = 41696^2 + 12565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1896435641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1896435601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948217820 + 948217821.

It is an arithmetic number, because the mean of its divisors is an integer number (948217821).

Almost surely, 2^1896435641 is an apocalyptic number.

It is an amenable number.

1896435641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1896435641 is an equidigital number, since it uses as much as digits as its factorization.

1896435641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 1896435641 is about 43548.0842402970. The cubic root of 1896435641 is about 1237.7873394051.

The spelling of 1896435641 in words is "one billion, eight hundred ninety-six million, four hundred thirty-five thousand, six hundred forty-one".