2195378831 has 8 divisors (see below), whose sum is σ = 2271176400. Its totient is φ = 2120447808.

The previous prime is 2195378791. The next prime is 2195378839. The reversal of 2195378831 is 1388735912.

2195378831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2195378831 - 2⁶ = 2195378767 is a prime.

It is a super-2 number, since 2×2195378831² = 9639376423205853122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195378839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211481 + ... + 221618.

It is an arithmetic number, because the mean of its divisors is an integer number (283897050).

Almost surely, 2^2195378831 is an apocalyptic number.

2195378831 is a deficient number, since it is larger than the sum of its proper divisors (75797569).

2195378831 is a wasteful number, since it uses less digits than its factorization.

2195378831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433273.

The product of its digits is 362880, while the sum is 47.

The square root of 2195378831 is about 46854.8698749660. The cubic root of 2195378831 is about 1299.6801641188.

The spelling of 2195378831 in words is "two billion, one hundred ninety-five million, three hundred seventy-eight thousand, eight hundred thirty-one".