1995727105 has 4 divisors (see below), whose sum is σ = 2394872532. Its totient is φ = 1596581680.

The previous prime is 1995727099. The next prime is 1995727117. The reversal of 1995727105 is 5017275991.

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 728082289 + 1267644816 = 26983^2 + 35604^2 .

It is not a de Polignac number, because 1995727105 - 2¹¹ = 1995725057 is a prime.

It is a super-3 number, since 3×1995727105³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian 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, 199572706 + ... + 199572715.

It is an arithmetic number, because the mean of its divisors is an integer number (598718133).

Almost surely, 2^1995727105 is an apocalyptic number.

It is an amenable number.

1995727105 is a deficient number, since it is larger than the sum of its proper divisors (399145427).

1995727105 is an equidigital number, since it uses as much as digits as its factorization.

1995727105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399145426.

The product of its (nonzero) digits is 198450, while the sum is 46.

The square root of 1995727105 is about 44673.5615884832. The cubic root of 1995727105 is about 1259.0231584326.

The spelling of 1995727105 in words is "one billion, nine hundred ninety-five million, seven hundred twenty-seven thousand, one hundred five".