2000181992 has 8 divisors (see below), whose sum is σ = 3750341250. Its totient is φ = 1000090992.

The previous prime is 2000181991. The next prime is 2000182013. The reversal of 2000181992 is 2991810002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1925980996 + 74200996 = 43886^2 + 8614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2000181992² = 8001456002242176128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2000181991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125011367 + ... + 125011382.

Almost surely, 2^2000181992 is an apocalyptic number.

It is an amenable number.

2000181992 is a deficient number, since it is larger than the sum of its proper divisors (1750159258).

2000181992 is a wasteful number, since it uses less digits than its factorization.

2000181992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250022755 (or 250022751 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 2000181992 is about 44723.3942361266. The cubic root of 2000181992 is about 1259.9592646611.

Adding to 2000181992 its reverse (2991810002), we get a palindrome (4991991994).

The spelling of 2000181992 in words is "two billion, one hundred eighty-one thousand, nine hundred ninety-two".