9407806645 has 4 divisors (see below), whose sum is σ = 11289367980. Its totient is φ = 7526245312.

The previous prime is 9407806637. The next prime is 9407806663. The reversal of 9407806645 is 5466087049.

9407806645 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 can be written as a sum of positive squares in 2 ways, for example, as 7243882321 + 2163924324 = 85111^2 + 46518^2 .

It is a cyclic number.

It is not a de Polignac number, because 9407806645 - 2³ = 9407806637 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 congruent 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, 940780660 + ... + 940780669.

It is an arithmetic number, because the mean of its divisors is an integer number (2822341995).

Almost surely, 2^9407806645 is an apocalyptic number.

It is an amenable number.

9407806645 is a deficient number, since it is larger than the sum of its proper divisors (1881561335).

9407806645 is a wasteful number, since it uses less digits than its factorization.

9407806645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881561334.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 9407806645 is about 96993.8484905100. The cubic root of 9407806645 is about 2111.0383728098.

The spelling of 9407806645 in words is "nine billion, four hundred seven million, eight hundred six thousand, six hundred forty-five".