2185348899 has 4 divisors (see below), whose sum is σ = 2913798536. Its totient is φ = 1456899264.

The previous prime is 2185348889. The next prime is 2185348939. The reversal of 2185348899 is 9988435812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2185348899 - 2⁴ = 2185348883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2185348889) 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, 364224814 + ... + 364224819.

It is an arithmetic number, because the mean of its divisors is an integer number (728449634).

Almost surely, 2^2185348899 is an apocalyptic number.

2185348899 is a deficient number, since it is larger than the sum of its proper divisors (728449637).

2185348899 is an equidigital number, since it uses as much as digits as its factorization.

2185348899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728449636.

The product of its digits is 4976640, while the sum is 57.

The square root of 2185348899 is about 46747.7154415058. The cubic root of 2185348899 is about 1297.6978781295.

The spelling of 2185348899 in words is "two billion, one hundred eighty-five million, three hundred forty-eight thousand, eight hundred ninety-nine".