2000181838 has 4 divisors (see below), whose sum is σ = 3000272760. Its totient is φ = 1000090918.

The previous prime is 2000181829. The next prime is 2000181839. The reversal of 2000181838 is 8381810002.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000181839) 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, 500045458 + ... + 500045461.

It is an arithmetic number, because the mean of its divisors is an integer number (750068190).

Almost surely, 2^2000181838 is an apocalyptic number.

2000181838 is a deficient number, since it is larger than the sum of its proper divisors (1000090922).

2000181838 is a wasteful number, since it uses less digits than its factorization.

2000181838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000090921.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 2000181838 is about 44723.3925144325. The cubic root of 2000181838 is about 1259.9592323250.

The spelling of 2000181838 in words is "two billion, one hundred eighty-one thousand, eight hundred thirty-eight".