7518689057 has 4 divisors (see below), whose sum is σ = 8202206256. Its totient is φ = 6835171860.

The previous prime is 7518689053. The next prime is 7518689077. The reversal of 7518689057 is 7509868157.

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 7518689057 - 2² = 7518689053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7518688993 and 7518689011.

It is not an unprimeable number, because it can be changed into a prime (7518689053) 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, 341758583 + ... + 341758604.

It is an arithmetic number, because the mean of its divisors is an integer number (2050551564).

Almost surely, 2^7518689057 is an apocalyptic number.

It is an amenable number.

7518689057 is a deficient number, since it is larger than the sum of its proper divisors (683517199).

7518689057 is a wasteful number, since it uses less digits than its factorization.

7518689057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683517198.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The square root of 7518689057 is about 86710.3745638317. The cubic root of 7518689057 is about 1959.0583649327.

Subtracting from 7518689057 its reverse (7509868157), we obtain a square (8820900 = 2970²).

The spelling of 7518689057 in words is "seven billion, five hundred eighteen million, six hundred eighty-nine thousand, fifty-seven".