19045916 has 24 divisors (see below), whose sum is σ = 35516880. Its totient is φ = 8905472.

The previous prime is 19045913. The next prime is 19045931. The reversal of 19045916 is 61954091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19045913) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10955 + ... + 12573.

It is an arithmetic number, because the mean of its divisors is an integer number (1479870).

Almost surely, 2^19045916 is an apocalyptic number.

It is an amenable number.

19045916 is a deficient number, since it is larger than the sum of its proper divisors (16470964).

19045916 is a wasteful number, since it uses less digits than its factorization.

19045916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 19045916 is about 4364.1626917428. The cubic root of 19045916 is about 267.0549434078.

The spelling of 19045916 in words is "nineteen million, forty-five thousand, nine hundred sixteen".