7445785315 has 4 divisors (see below), whose sum is σ = 8934942384. Its totient is φ = 5956628248.

The previous prime is 7445785289. The next prime is 7445785367. The reversal of 7445785315 is 5135875447.

7445785315 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7445785315 - 2⁵ = 7445785283 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744578527 + ... + 744578536.

It is an arithmetic number, because the mean of its divisors is an integer number (2233735596).

Almost surely, 2^7445785315 is an apocalyptic number.

7445785315 is a deficient number, since it is larger than the sum of its proper divisors (1489157069).

7445785315 is a wasteful number, since it uses less digits than its factorization.

7445785315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489157068.

The product of its digits is 2352000, while the sum is 49.

The square root of 7445785315 is about 86288.9640394413. The cubic root of 7445785315 is about 1952.7058919446.

The spelling of 7445785315 in words is "seven billion, four hundred forty-five million, seven hundred eighty-five thousand, three hundred fifteen".