8491307045 has 16 divisors (see below), whose sum is σ = 11269962480. Its totient is φ = 6101028864.

The previous prime is 8491307017. The next prime is 8491307057. The reversal of 8491307045 is 5407031948.

It can be written as a sum of positive squares in 8 ways, for example, as 396886084 + 8094420961 = 19922^2 + 89969^2 .

It is not a de Polignac number, because 8491307045 - 2¹⁶ = 8491241509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8491306993 and 8491307011.

It is a congruent 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, 1762940 + ... + 1767749.

It is an arithmetic number, because the mean of its divisors is an integer number (704372655).

Almost surely, 2^8491307045 is an apocalyptic number.

It is an amenable number.

8491307045 is a deficient number, since it is larger than the sum of its proper divisors (2778655435).

8491307045 is a wasteful number, since it uses less digits than its factorization.

8491307045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530744.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 8491307045 is about 92148.2883454706. The cubic root of 8491307045 is about 2040.1315951410.

The spelling of 8491307045 in words is "eight billion, four hundred ninety-one million, three hundred seven thousand, forty-five".