1995918266 has 8 divisors (see below), whose sum is σ = 2994133140. Its totient is φ = 997873888.

The previous prime is 1995918247. The next prime is 1995918271. The reversal of 1995918266 is 6628195991.

It can be written as a sum of positive squares in 2 ways, for example, as 1965060241 + 30858025 = 44329^2 + 5555^2 .

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

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, 7601 + ... + 63636.

Almost surely, 2^1995918266 is an apocalyptic number.

1995918266 is a deficient number, since it is larger than the sum of its proper divisors (998214874).

1995918266 is a wasteful number, since it uses less digits than its factorization.

1995918266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85248.

The product of its digits is 2099520, while the sum is 56.

The square root of 1995918266 is about 44675.7010689256. The cubic root of 1995918266 is about 1259.0633557190.

The spelling of 1995918266 in words is "one billion, nine hundred ninety-five million, nine hundred eighteen thousand, two hundred sixty-six".