19980794 has 16 divisors (see below), whose sum is σ = 30652800. Its totient is φ = 9765360.

The previous prime is 19980791. The next prime is 19980803. The reversal of 19980794 is 49708991.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19980791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23867 + ... + 24689.

It is an arithmetic number, because the mean of its divisors is an integer number (1915800).

Almost surely, 2^19980794 is an apocalyptic number.

19980794 is a deficient number, since it is larger than the sum of its proper divisors (10672006).

19980794 is a wasteful number, since it uses less digits than its factorization.

19980794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 19980794 is about 4469.9881431610. The cubic root of 19980794 is about 271.3548453237.

The spelling of 19980794 in words is "nineteen million, nine hundred eighty thousand, seven hundred ninety-four".