8537473581 has 16 divisors (see below), whose sum is σ = 14010213504. Its totient is φ = 4503282624.

The previous prime is 8537473561. The next prime is 8537473603. The reversal of 8537473581 is 1853747358.

It is not a de Polignac number, because 8537473581 - 2⁶ = 8537473517 is a prime.

It is a super-2 number, since 2×8537473581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8537473561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15636126 + ... + 15636671.

It is an arithmetic number, because the mean of its divisors is an integer number (875638344).

Almost surely, 2^8537473581 is an apocalyptic number.

It is an amenable number.

8537473581 is a deficient number, since it is larger than the sum of its proper divisors (5472739923).

8537473581 is a wasteful number, since it uses less digits than its factorization.

8537473581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31272820.

The product of its digits is 2822400, while the sum is 51.

The square root of 8537473581 is about 92398.4501006375. The cubic root of 8537473581 is about 2043.8222569932.

The spelling of 8537473581 in words is "eight billion, five hundred thirty-seven million, four hundred seventy-three thousand, five hundred eighty-one".