1994968079 has 16 divisors (see below), whose sum is σ = 2227518720. Its totient is φ = 1774241280.

The previous prime is 1994968051. The next prime is 1994968093. The reversal of 1994968079 is 9708694991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1994968079 - 2⁸ = 1994967823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994968049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81479 + ... + 103095.

It is an arithmetic number, because the mean of its divisors is an integer number (139219920).

Almost surely, 2^1994968079 is an apocalyptic number.

1994968079 is a deficient number, since it is larger than the sum of its proper divisors (232550641).

1994968079 is a wasteful number, since it uses less digits than its factorization.

1994968079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21890.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The square root of 1994968079 is about 44665.0655322479. The cubic root of 1994968079 is about 1258.8635253035.

The spelling of 1994968079 in words is "one billion, nine hundred ninety-four million, nine hundred sixty-eight thousand, seventy-nine".