2040185291 has 8 divisors (see below), whose sum is σ = 2096028624. Its totient is φ = 1984379040.

The previous prime is 2040185263. The next prime is 2040185369. The reversal of 2040185291 is 1925810402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040185291 is a prime.

It is a super-2 number, since 2×2040185291² = 8324712043225509362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040185201) 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 in 7 ways as a sum of consecutive naturals, for example, 130736 + ... + 145506.

It is an arithmetic number, because the mean of its divisors is an integer number (262003578).

Almost surely, 2^2040185291 is an apocalyptic number.

2040185291 is a deficient number, since it is larger than the sum of its proper divisors (55843333).

2040185291 is a wasteful number, since it uses less digits than its factorization.

2040185291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2040185291 is about 45168.4103218167. The cubic root of 2040185291 is about 1268.3035382995.

Adding to 2040185291 its reverse (1925810402), we get a palindrome (3965995693).

The spelling of 2040185291 in words is "two billion, forty million, one hundred eighty-five thousand, two hundred ninety-one".