2041277581 has 4 divisors (see below), whose sum is σ = 2332888672. Its totient is φ = 1749666492.

The previous prime is 2041277551. The next prime is 2041277593. The reversal of 2041277581 is 1857721402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2041277581 - 2⁷ = 2041277453 is a prime.

It is a super-2 number, since 2×2041277581² = 8333628325386423122, which contains 22 as substring.

It is the 45181-st Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2041277581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2041277551) by changing a digit.

It is a nontrivial repunit in base 45180.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145805535 + ... + 145805548.

It is an arithmetic number, because the mean of its divisors is an integer number (583222168).

Almost surely, 2^2041277581 is an apocalyptic number.

It is an amenable number.

2041277581 is a deficient number, since it is larger than the sum of its proper divisors (291611091).

2041277581 is an equidigital number, since it uses as much as digits as its factorization.

2041277581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291611090.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 2041277581 is about 45180.5000083000. The cubic root of 2041277581 is about 1268.5298425993.

Adding to 2041277581 its reverse (1857721402), we get a palindrome (3898998983).

The spelling of 2041277581 in words is "two billion, forty-one million, two hundred seventy-seven thousand, five hundred eighty-one".