5219718637 has 4 divisors (see below), whose sum is σ = 5965392736. Its totient is φ = 4474044540.

The previous prime is 5219718631. The next prime is 5219718659. The reversal of 5219718637 is 7368179125.

It is a happy number.

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 not a de Polignac number, because 5219718637 - 2³ = 5219718629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5219718631) 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, 372837039 + ... + 372837052.

It is an arithmetic number, because the mean of its divisors is an integer number (1491348184).

Almost surely, 2^5219718637 is an apocalyptic number.

It is an amenable number.

5219718637 is a deficient number, since it is larger than the sum of its proper divisors (745674099).

5219718637 is an equidigital number, since it uses as much as digits as its factorization.

5219718637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745674098.

The product of its digits is 635040, while the sum is 49.

The square root of 5219718637 is about 72247.6202860689. The cubic root of 5219718637 is about 1734.6653272371.

The spelling of 5219718637 in words is "five billion, two hundred nineteen million, seven hundred eighteen thousand, six hundred thirty-seven".