7485515809 has 4 divisors (see below), whose sum is σ = 7659597616. Its totient is φ = 7311434004.

The previous prime is 7485515777. The next prime is 7485515879. The reversal of 7485515809 is 9085155847.

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 7485515809 - 2⁵ = 7485515777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7485515879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87040839 + ... + 87040924.

It is an arithmetic number, because the mean of its divisors is an integer number (1914899404).

Almost surely, 2^7485515809 is an apocalyptic number.

It is an amenable number.

7485515809 is a deficient number, since it is larger than the sum of its proper divisors (174081807).

7485515809 is a wasteful number, since it uses less digits than its factorization.

7485515809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174081806.

The product of its (nonzero) digits is 2016000, while the sum is 52.

The square root of 7485515809 is about 86518.8754492336. The cubic root of 7485515809 is about 1956.1729265310.

The spelling of 7485515809 in words is "seven billion, four hundred eighty-five million, five hundred fifteen thousand, eight hundred nine".