2195143691 has 16 divisors (see below), whose sum is σ = 2408448000. Its totient is φ = 1988502048.

The previous prime is 2195143673. The next prime is 2195143723. The reversal of 2195143691 is 1963415912.

It is not a de Polignac number, because 2195143691 - 2¹⁸ = 2194881547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2195143091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165110 + ... + 177908.

It is an arithmetic number, because the mean of its divisors is an integer number (150528000).

Almost surely, 2^2195143691 is an apocalyptic number.

2195143691 is a deficient number, since it is larger than the sum of its proper divisors (213304309).

2195143691 is a wasteful number, since it uses less digits than its factorization.

2195143691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13058.

The product of its digits is 58320, while the sum is 41.

The square root of 2195143691 is about 46852.3605701997. The cubic root of 2195143691 is about 1299.6337609345.

The spelling of 2195143691 in words is "two billion, one hundred ninety-five million, one hundred forty-three thousand, six hundred ninety-one".