1994910971 has 2 divisors, whose sum is σ = 1994910972. Its totient is φ = 1994910970.

The previous prime is 1994910959. The next prime is 1994910989. The reversal of 1994910971 is 1790194991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1994910971 - 2¹⁸ = 1994648827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1994910941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997455485 + 997455486.

It is an arithmetic number, because the mean of its divisors is an integer number (997455486).

Almost surely, 2^1994910971 is an apocalyptic number.

1994910971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994910971 is an equidigital number, since it uses as much as digits as its factorization.

1994910971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 50.

The square root of 1994910971 is about 44664.4262360998. The cubic root of 1994910971 is about 1258.8515131039.

The spelling of 1994910971 in words is "one billion, nine hundred ninety-four million, nine hundred ten thousand, nine hundred seventy-one".