8747391545 has 4 divisors (see below), whose sum is σ = 10496869860. Its totient is φ = 6997913232.

The previous prime is 8747391529. The next prime is 8747391553. The reversal of 8747391545 is 5451937478.

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 6034648489 + 2712743056 = 77683^2 + 52084^2 .

It is a cyclic number.

It is not a de Polignac number, because 8747391545 - 2⁴ = 8747391529 is a prime.

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, 874739150 + ... + 874739159.

It is an arithmetic number, because the mean of its divisors is an integer number (2624217465).

Almost surely, 2^8747391545 is an apocalyptic number.

It is an amenable number.

8747391545 is a deficient number, since it is larger than the sum of its proper divisors (1749478315).

8747391545 is a wasteful number, since it uses less digits than its factorization.

8747391545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749478314.

The product of its digits is 4233600, while the sum is 53.

The square root of 8747391545 is about 93527.4908516207. The cubic root of 8747391545 is about 2060.4378640821.

The spelling of 8747391545 in words is "eight billion, seven hundred forty-seven million, three hundred ninety-one thousand, five hundred forty-five".