19901104 has 10 divisors (see below), whose sum is σ = 38558420. Its totient is φ = 9950544.

The previous prime is 19901093. The next prime is 19901107. The reversal of 19901104 is 40110991.

It is not an unprimeable number, because it can be changed into a prime (19901107) 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 as a sum of consecutive naturals, namely, 621894 + ... + 621925.

It is an arithmetic number, because the mean of its divisors is an integer number (3855842).

Almost surely, 2^19901104 is an apocalyptic number.

It is an amenable number.

19901104 is a deficient number, since it is larger than the sum of its proper divisors (18657316).

19901104 is a wasteful number, since it uses less digits than its factorization.

19901104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243827 (or 1243821 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 19901104 is about 4461.0653436147. The cubic root of 19901104 is about 270.9936137709.

The spelling of 19901104 in words is "nineteen million, nine hundred one thousand, one hundred four".