3809407506745 has 4 divisors (see below), whose sum is σ = 4571289008100. Its totient is φ = 3047526005392.

The previous prime is 3809407506713. The next prime is 3809407506761. The reversal of 3809407506745 is 5476057049083.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2582410432144 + 1226997074601 = 1606988^2 + 1107699^2 .

It is a cyclic number.

It is not a de Polignac number, because 3809407506745 - 2⁵ = 3809407506713 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3809407506745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380940750670 + ... + 380940750679.

It is an arithmetic number, because the mean of its divisors is an integer number (1142822252025).

Almost surely, 2^{3809407506745} is an apocalyptic number.

It is an amenable number.

3809407506745 is a deficient number, since it is larger than the sum of its proper divisors (761881501355).

3809407506745 is an equidigital number, since it uses as much as digits as its factorization.

3809407506745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761881501354.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 3809407506745 in words is "three trillion, eight hundred nine billion, four hundred seven million, five hundred six thousand, seven hundred forty-five".