19473894 has 48 divisors (see below), whose sum is σ = 46837440. Its totient is φ = 5797680.

The previous prime is 19473869. The next prime is 19473899. The reversal of 19473894 is 49837491.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19473899) 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, 10849 + ... + 12515.

It is an arithmetic number, because the mean of its divisors is an integer number (975780).

Almost surely, 2^19473894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19473894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23418720).

19473894 is an abundant number, since it is smaller than the sum of its proper divisors (27363546).

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

19473894 is a wasteful number, since it uses less digits than its factorization.

19473894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1742 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19473894 is about 4412.9235207513. The cubic root of 19473894 is about 269.0404623057.

It can be divided in two parts, 194 and 73894, that added together give a cube (74088 = 42³).

The spelling of 19473894 in words is "nineteen million, four hundred seventy-three thousand, eight hundred ninety-four".