165848747849 has 16 divisors (see below), whose sum is σ = 176445527040. Its totient is φ = 155347207680.

The previous prime is 165848747837. The next prime is 165848747863. The reversal of 165848747849 is 948747848561.

It is not a de Polignac number, because 165848747849 - 2²⁸ = 165580312393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165848747149) 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, 2969072 + ... + 3024414.

It is an arithmetic number, because the mean of its divisors is an integer number (11027845440).

Almost surely, 2^165848747849 is an apocalyptic number.

It is an amenable number.

165848747849 is a deficient number, since it is larger than the sum of its proper divisors (10596779191).

165848747849 is a wasteful number, since it uses less digits than its factorization.

165848747849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56200.

The product of its digits is 433520640, while the sum is 71.

The spelling of 165848747849 in words is "one hundred sixty-five billion, eight hundred forty-eight million, seven hundred forty-seven thousand, eight hundred forty-nine".