2001766995 has 12 divisors (see below), whose sum is σ = 3469729536. Its totient is φ = 1067609040.

The previous prime is 2001766969. The next prime is 2001767041. The reversal of 2001766995 is 5996671002.

It is a happy number.

It is not a de Polignac number, because 2001766995 - 2⁷ = 2001766867 is a prime.

It is a super-2 number, since 2×2001766995² = 8014142204542660050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 44483711 = 2001766995 / (2 + 0 + 0 + 1 + 7 + 6 + 6 + 9 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2001766995.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22241811 + ... + 22241900.

It is an arithmetic number, because the mean of its divisors is an integer number (289144128).

Almost surely, 2^2001766995 is an apocalyptic number.

2001766995 is a deficient number, since it is larger than the sum of its proper divisors (1467962541).

2001766995 is a wasteful number, since it uses less digits than its factorization.

2001766995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44483722 (or 44483719 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 2001766995 is about 44741.1107930950. The cubic root of 2001766995 is about 1260.2919863751.

The spelling of 2001766995 in words is "two billion, one million, seven hundred sixty-six thousand, nine hundred ninety-five".