8166537233 has 4 divisors (see below), whose sum is σ = 8238807588. Its totient is φ = 8094266880.

The previous prime is 8166537191. The next prime is 8166537259. The reversal of 8166537233 is 3327356618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3327356618 = 2 ⋅1663678309.

It can be written as a sum of positive squares in 2 ways, for example, as 688957504 + 7477579729 = 26248^2 + 86473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8166537233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8166537133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36135008 + ... + 36135233.

It is an arithmetic number, because the mean of its divisors is an integer number (2059701897).

Almost surely, 2^8166537233 is an apocalyptic number.

It is an amenable number.

8166537233 is a deficient number, since it is larger than the sum of its proper divisors (72270355).

8166537233 is a wasteful number, since it uses less digits than its factorization.

8166537233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72270354.

The product of its digits is 544320, while the sum is 44.

The square root of 8166537233 is about 90368.8952737611. The cubic root of 8166537233 is about 2013.7829003856.

The spelling of 8166537233 in words is "eight billion, one hundred sixty-six million, five hundred thirty-seven thousand, two hundred thirty-three".