1896911801 has 2 divisors, whose sum is σ = 1896911802. Its totient is φ = 1896911800.

The previous prime is 1896911777. The next prime is 1896911803. The reversal of 1896911801 is 1081196981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1345789225 + 551122576 = 36685^2 + 23476^2 .

It is an emirp because it is prime and its reverse (1081196981) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1081169681 and 1869611801.

It is a cyclic number.

It is not a de Polignac number, because 1896911801 - 2¹⁰ = 1896910777 is a prime.

Together with 1896911803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1896911803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948455900 + 948455901.

It is an arithmetic number, because the mean of its divisors is an integer number (948455901).

Almost surely, 2^1896911801 is an apocalyptic number.

It is an amenable number.

1896911801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1896911801 is an equidigital number, since it uses as much as digits as its factorization.

1896911801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 44.

The square root of 1896911801 is about 43553.5509574133. The cubic root of 1896911801 is about 1237.8909259239.

The spelling of 1896911801 in words is "one billion, eight hundred ninety-six million, nine hundred eleven thousand, eight hundred one".