2195531015 has 4 divisors (see below), whose sum is σ = 2634637224. Its totient is φ = 1756424808.

The previous prime is 2195531003. The next prime is 2195531021. The reversal of 2195531015 is 5101355912.

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

It is a cyclic number.

It is not a de Polignac number, because 2195531015 - 2²⁰ = 2194482439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219553097 + ... + 219553106.

It is an arithmetic number, because the mean of its divisors is an integer number (658659306).

Almost surely, 2^2195531015 is an apocalyptic number.

2195531015 is a deficient number, since it is larger than the sum of its proper divisors (439106209).

2195531015 is an equidigital number, since it uses as much as digits as its factorization.

2195531015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439106208.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 2195531015 is about 46856.4938402352. The cubic root of 2195531015 is about 1299.7101947682.

Adding to 2195531015 its reverse (5101355912), we get a palindrome (7296886927).

The spelling of 2195531015 in words is "two billion, one hundred ninety-five million, five hundred thirty-one thousand, fifteen".