5191943364 has 144 divisors (see below), whose sum is σ = 14352199680. Its totient is φ = 1577568960.

The previous prime is 5191943321. The next prime is 5191943369. The reversal of 5191943364 is 4633491915.

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 (5191943369) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1718247 + ... + 1721265.

Almost surely, 2^5191943364 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 5191943364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7176099840).

5191943364 is an abundant number, since it is smaller than the sum of its proper divisors (9160256316).

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

5191943364 is a wasteful number, since it uses less digits than its factorization.

5191943364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3145 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 5191943364 is about 72055.1411351057. The cubic root of 5191943364 is about 1731.5830080454.

The spelling of 5191943364 in words is "five billion, one hundred ninety-one million, nine hundred forty-three thousand, three hundred sixty-four".