7489637819 has 4 divisors (see below), whose sum is σ = 7499378040. Its totient is φ = 7479897600.

The previous prime is 7489637807. The next prime is 7489637843. The reversal of 7489637819 is 9187369847.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7489637819 - 2⁴ = 7489637803 is a prime.

It is a super-2 number, since 2×7489637819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7489637849) 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, 4868957 + ... + 4870494.

It is an arithmetic number, because the mean of its divisors is an integer number (1874844510).

Almost surely, 2^7489637819 is an apocalyptic number.

7489637819 is a deficient number, since it is larger than the sum of its proper divisors (9740221).

7489637819 is an equidigital number, since it uses as much as digits as its factorization.

7489637819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9740220.

The product of its digits is 18289152, while the sum is 62.

The square root of 7489637819 is about 86542.6936199700. The cubic root of 7489637819 is about 1956.5319258283.

The spelling of 7489637819 in words is "seven billion, four hundred eighty-nine million, six hundred thirty-seven thousand, eight hundred nineteen".