2072733181 has 4 divisors (see below), whose sum is σ = 2072923164. Its totient is φ = 2072543200.

The previous prime is 2072733167. The next prime is 2072733277. The reversal of 2072733181 is 1813372702.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 186568281 + 1886164900 = 13659^2 + 43430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072733181 - 2⁵ = 2072733149 is a prime.

It is a super-2 number, since 2×2072733181² = 8592445679236757522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072733101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77560 + ... + 100801.

It is an arithmetic number, because the mean of its divisors is an integer number (518230791).

Almost surely, 2^2072733181 is an apocalyptic number.

It is an amenable number.

2072733181 is a deficient number, since it is larger than the sum of its proper divisors (189983).

2072733181 is a wasteful number, since it uses less digits than its factorization.

2072733181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189982.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 2072733181 is about 45527.2795255768. The cubic root of 2072733181 is about 1275.0125706309.

The spelling of 2072733181 in words is "two billion, seventy-two million, seven hundred thirty-three thousand, one hundred eighty-one".