2049140081 has 4 divisors (see below), whose sum is σ = 2138233152. Its totient is φ = 1960047012.

The previous prime is 2049140077. The next prime is 2049140089. The reversal of 2049140081 is 1800419402.

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 a cyclic number.

It is not a de Polignac number, because 2049140081 - 2² = 2049140077 is a prime.

It is a super-2 number, since 2×2049140081² = 8397950143121373122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049140089) 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, 44546501 + ... + 44546546.

It is an arithmetic number, because the mean of its divisors is an integer number (534558288).

Almost surely, 2^2049140081 is an apocalyptic number.

It is an amenable number.

2049140081 is a deficient number, since it is larger than the sum of its proper divisors (89093071).

2049140081 is an equidigital number, since it uses as much as digits as its factorization.

2049140081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89093070.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 2049140081 is about 45267.4284778802. The cubic root of 2049140081 is about 1270.1564444473.

Adding to 2049140081 its reverse (1800419402), we get a palindrome (3849559483).

The spelling of 2049140081 in words is "two billion, forty-nine million, one hundred forty thousand, eighty-one".