19516914 has 48 divisors (see below), whose sum is σ = 44928000. Its totient is φ = 6105888.

The previous prime is 19516909. The next prime is 19516919. The reversal of 19516914 is 41961591.

It is an interprime number because it is at equal distance from previous prime (19516909) and next prime (19516919).

It is not an unprimeable number, because it can be changed into a prime (19516919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50767 + ... + 51149.

It is an arithmetic number, because the mean of its divisors is an integer number (936000).

Almost surely, 2^19516914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19516914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22464000).

19516914 is an abundant number, since it is smaller than the sum of its proper divisors (25411086).

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

19516914 is a wasteful number, since it uses less digits than its factorization.

19516914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 556 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 19516914 is about 4417.7951514302. The cubic root of 19516914 is about 269.2384300447.

The spelling of 19516914 in words is "nineteen million, five hundred sixteen thousand, nine hundred fourteen".