5438394432 has 168 divisors, whose sum is σ = 16243779552. Its totient is φ = 1804032000.

The previous prime is 5438394431. The next prime is 5438394433. The reversal of 5438394432 is 2344938345.

5438394432 is a `hidden beast` number, since 54 + 3 + 83 + 94 + 432 = 666.

It is an interprime number because it is at equal distance from previous prime (5438394431) and next prime (5438394433).

It is a super-2 number, since 2×5438394432² = 59152267996017205248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5438394431) 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, 3747307 + ... + 3748757.

It is an arithmetic number, because the mean of its divisors is an integer number (96689164).

Almost surely, 2^5438394432 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 5438394432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8121889776).

5438394432 is an abundant number, since it is smaller than the sum of its proper divisors (10805385120).

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

5438394432 is a wasteful number, since it uses less digits than its factorization.

5438394432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719 (or 1697 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The square root of 5438394432 is about 73745.4705863350. The cubic root of 5438394432 is about 1758.5588271073.

The spelling of 5438394432 in words is "five billion, four hundred thirty-eight million, three hundred ninety-four thousand, four hundred thirty-two".