8539147645 has 16 divisors (see below), whose sum is σ = 11718862848. Its totient is φ = 5851399680.

The previous prime is 8539147621. The next prime is 8539147691. The reversal of 8539147645 is 5467419358.

It is not a de Polignac number, because 8539147645 - 2¹⁵ = 8539114877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8539147592 and 8539147601.

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, 31444 + ... + 134413.

It is an arithmetic number, because the mean of its divisors is an integer number (732428928).

Almost surely, 2^8539147645 is an apocalyptic number.

It is an amenable number.

8539147645 is a deficient number, since it is larger than the sum of its proper divisors (3179715203).

8539147645 is a wasteful number, since it uses less digits than its factorization.

8539147645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167340.

The product of its digits is 3628800, while the sum is 52.

The square root of 8539147645 is about 92407.5085964339. The cubic root of 8539147645 is about 2043.9558353726.

The spelling of 8539147645 in words is "eight billion, five hundred thirty-nine million, one hundred forty-seven thousand, six hundred forty-five".