2185479137 has 4 divisors (see below), whose sum is σ = 2255978496. Its totient is φ = 2114979780.

The previous prime is 2185479077. The next prime is 2185479143. The reversal of 2185479137 is 7319745812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2185479137 - 2⁶ = 2185479073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2185479091 and 2185479100.

It is not an unprimeable number, because it can be changed into a prime (2185479437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35249633 + ... + 35249694.

It is an arithmetic number, because the mean of its divisors is an integer number (563994624).

Almost surely, 2^2185479137 is an apocalyptic number.

It is an amenable number.

2185479137 is a deficient number, since it is larger than the sum of its proper divisors (70499359).

2185479137 is an equidigital number, since it uses as much as digits as its factorization.

2185479137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70499358.

The product of its digits is 423360, while the sum is 47.

The square root of 2185479137 is about 46749.1084086103. The cubic root of 2185479137 is about 1297.7236568079.

The spelling of 2185479137 in words is "two billion, one hundred eighty-five million, four hundred seventy-nine thousand, one hundred thirty-seven".