2057780181 has 16 divisors (see below), whose sum is σ = 2906731008. Its totient is φ = 1290432000.

The previous prime is 2057780177. The next prime is 2057780183. The reversal of 2057780181 is 1810877502.

It is not a de Polignac number, because 2057780181 - 2² = 2057780177 is a prime.

It is a super-2 number, since 2×2057780181² = 8468918546632785522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057780183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89161 + ... + 109841.

It is an arithmetic number, because the mean of its divisors is an integer number (181670688).

Almost surely, 2^2057780181 is an apocalyptic number.

It is an amenable number.

2057780181 is a deficient number, since it is larger than the sum of its proper divisors (848950827).

2057780181 is a wasteful number, since it uses less digits than its factorization.

2057780181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22652.

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 2057780181 is about 45362.7620521502. The cubic root of 2057780181 is about 1271.9391256566.

The spelling of 2057780181 in words is "two billion, fifty-seven million, seven hundred eighty thousand, one hundred eighty-one".