2195246381 has 4 divisors (see below), whose sum is σ = 2195740764. Its totient is φ = 2194752000.

The previous prime is 2195246359. The next prime is 2195246393. The reversal of 2195246381 is 1836425912.

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

It can be written as a sum of positive squares in 2 ways, for example, as 670343881 + 1524902500 = 25891^2 + 39050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2195246381 is a prime.

It is a super-2 number, since 2×2195246381² = 9638213346587194322, 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 (2195246311) 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, 240470 + ... + 249431.

It is an arithmetic number, because the mean of its divisors is an integer number (548935191).

Almost surely, 2^2195246381 is an apocalyptic number.

It is an amenable number.

2195246381 is a deficient number, since it is larger than the sum of its proper divisors (494383).

2195246381 is an equidigital number, since it uses as much as digits as its factorization.

2195246381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494382.

The product of its digits is 103680, while the sum is 41.

The square root of 2195246381 is about 46853.4564466700. The cubic root of 2195246381 is about 1299.6540264735.

The spelling of 2195246381 in words is "two billion, one hundred ninety-five million, two hundred forty-six thousand, three hundred eighty-one".