19969516 has 24 divisors (see below), whose sum is σ = 41317920. Its totient is φ = 8262912.

The previous prime is 19969511. The next prime is 19969519. The reversal of 19969516 is 61596991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19969511) 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, 11485 + ... + 13108.

It is an arithmetic number, because the mean of its divisors is an integer number (1721580).

Almost surely, 2^19969516 is an apocalyptic number.

It is an amenable number.

19969516 is an abundant number, since it is smaller than the sum of its proper divisors (21348404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19969516 is a wasteful number, since it uses less digits than its factorization.

19969516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24633 (or 24631 counting only the distinct ones).

The product of its digits is 131220, while the sum is 46.

The square root of 19969516 is about 4468.7264404973. The cubic root of 19969516 is about 271.3037810213.

The spelling of 19969516 in words is "nineteen million, nine hundred sixty-nine thousand, five hundred sixteen".