19016964 has 48 divisors (see below), whose sum is σ = 50646400. Its totient is φ = 6166368.

The previous prime is 19016951. The next prime is 19016969. The reversal of 19016964 is 46961091.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (19016969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617 + ... + 6375.

Almost surely, 2^19016964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19016964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25323200).

19016964 is an abundant number, since it is smaller than the sum of its proper divisors (31629436).

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

19016964 is a wasteful number, since it uses less digits than its factorization.

19016964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809 (or 4801 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 19016964 is about 4360.8444136428. The cubic root of 19016964 is about 266.9195566270.

The spelling of 19016964 in words is "nineteen million, sixteen thousand, nine hundred sixty-four".