8909150813 has 4 divisors (see below), whose sum is σ = 9216362940. Its totient is φ = 8601938688.

The previous prime is 8909150807. The next prime is 8909150837. The reversal of 8909150813 is 3180519098.

It is a happy number.

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 2928757924 + 5980392889 = 54118^2 + 77333^2 .

It is a cyclic number.

It is not a de Polignac number, because 8909150813 - 2⁴ = 8909150797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8909150113) 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, 153606020 + ... + 153606077.

It is an arithmetic number, because the mean of its divisors is an integer number (2304090735).

Almost surely, 2^8909150813 is an apocalyptic number.

It is an amenable number.

8909150813 is a deficient number, since it is larger than the sum of its proper divisors (307212127).

8909150813 is a wasteful number, since it uses less digits than its factorization.

8909150813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307212126.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 8909150813 is about 94388.2980723776. The cubic root of 8909150813 is about 2073.0611056138.

The spelling of 8909150813 in words is "eight billion, nine hundred nine million, one hundred fifty thousand, eight hundred thirteen".