1894217472 has 216 divisors, whose sum is σ = 6279707616. Its totient is φ = 537919488.

The previous prime is 1894217471. The next prime is 1894217497. The reversal of 1894217472 is 2747124981.

1894217472 is a `hidden beast` number, since 189 + 421 + 7 + 47 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894217471) 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, 4144668 + ... + 4145124.

Almost surely, 2^1894217472 is an apocalyptic number.

1894217472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1894217472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3139853808).

1894217472 is an abundant number, since it is smaller than the sum of its proper divisors (4385490144).

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

1894217472 is a wasteful number, since it uses less digits than its factorization.

1894217472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 726 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1894217472 is about 43522.6087453406. The cubic root of 1894217472 is about 1237.3045578095.

The spelling of 1894217472 in words is "one billion, eight hundred ninety-four million, two hundred seventeen thousand, four hundred seventy-two".