1894481011 has 2 divisors, whose sum is σ = 1894481012. Its totient is φ = 1894481010.

The previous prime is 1894481009. The next prime is 1894481027. The reversal of 1894481011 is 1101844981.

It is a weak prime.

It is an emirp because it is prime and its reverse (1101844981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1894481011 - 2¹ = 1894481009 is a prime.

Together with 1894481009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1894481041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 947240505 + 947240506.

It is an arithmetic number, because the mean of its divisors is an integer number (947240506).

Almost surely, 2^1894481011 is an apocalyptic number.

1894481011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1894481011 is an equidigital number, since it uses as much as digits as its factorization.

1894481011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1894481011 is about 43525.6362503755. The cubic root of 1894481011 is about 1237.3619364526.

The spelling of 1894481011 in words is "one billion, eight hundred ninety-four million, four hundred eighty-one thousand, eleven".