5239191780 has 168 divisors, whose sum is σ = 16579043712. Its totient is φ = 1390084416.

The previous prime is 5239191779. The next prime is 5239191821. The reversal of 5239191780 is 871919325.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3308869 + ... + 3310451.

It is an arithmetic number, because the mean of its divisors is an integer number (98684784).

Almost surely, 2^5239191780 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 5239191780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8289521856).

5239191780 is an abundant number, since it is smaller than the sum of its proper divisors (11339851932).

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

5239191780 is a wasteful number, since it uses less digits than its factorization.

5239191780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1820 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 5239191780 is about 72382.2615010059. The cubic root of 5239191780 is about 1736.8198153990.

The spelling of 5239191780 in words is "five billion, two hundred thirty-nine million, one hundred ninety-one thousand, seven hundred eighty".