9214591945 has 16 divisors (see below), whose sum is σ = 12198532752. Its totient is φ = 6638653440.

The previous prime is 9214591847. The next prime is 9214591963. The reversal of 9214591945 is 5491954129.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2096632521 + 7117959424 = 45789^2 + 84368^2 .

It is not a de Polignac number, because 9214591945 - 2⁷ = 9214591817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726152 + ... + 1731481.

It is an arithmetic number, because the mean of its divisors is an integer number (762408297).

Almost surely, 2^9214591945 is an apocalyptic number.

It is an amenable number.

9214591945 is a deficient number, since it is larger than the sum of its proper divisors (2983940807).

9214591945 is a wasteful number, since it uses less digits than its factorization.

9214591945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457692.

The product of its digits is 583200, while the sum is 49.

The square root of 9214591945 is about 95992.6661000725. Note that the first 3 decimals coincide. The cubic root of 9214591945 is about 2096.4863348124.

The spelling of 9214591945 in words is "nine billion, two hundred fourteen million, five hundred ninety-one thousand, nine hundred forty-five".