5182191809 has 4 divisors (see below), whose sum is σ = 5201314560. Its totient is φ = 5163069060.

The previous prime is 5182191797. The next prime is 5182191823. The reversal of 5182191809 is 9081912815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5182191809 - 2¹⁶ = 5182126273 is a prime.

It is a super-2 number, since 2×5182191809² = 53710223890533384962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5182191809.

It is not an unprimeable number, because it can be changed into a prime (5182191109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9560969 + ... + 9561510.

It is an arithmetic number, because the mean of its divisors is an integer number (1300328640).

Almost surely, 2^5182191809 is an apocalyptic number.

It is an amenable number.

5182191809 is a deficient number, since it is larger than the sum of its proper divisors (19122751).

5182191809 is a wasteful number, since it uses less digits than its factorization.

5182191809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19122750.

The product of its (nonzero) digits is 51840, while the sum is 44.

The square root of 5182191809 is about 71987.4420228973. The cubic root of 5182191809 is about 1730.4982369954.

The spelling of 5182191809 in words is "five billion, one hundred eighty-two million, one hundred ninety-one thousand, eight hundred nine".