19349916 has 12 divisors (see below), whose sum is σ = 45149832. Its totient is φ = 6449968.

The previous prime is 19349899. The next prime is 19349959. The reversal of 19349916 is 61994391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806235 + ... + 806258.

It is an arithmetic number, because the mean of its divisors is an integer number (3762486).

Almost surely, 2^19349916 is an apocalyptic number.

It is an amenable number.

19349916 is an abundant number, since it is smaller than the sum of its proper divisors (25799916).

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

19349916 is a wasteful number, since it uses less digits than its factorization.

19349916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612500 (or 1612498 counting only the distinct ones).

The product of its digits is 52488, while the sum is 42.

The square root of 19349916 is about 4398.8539416534. The cubic root of 19349916 is about 268.4683094280.

The spelling of 19349916 in words is "nineteen million, three hundred forty-nine thousand, nine hundred sixteen".