2741501981 has 4 divisors (see below), whose sum is σ = 2742156000. Its totient is φ = 2740847964.

The previous prime is 2741501899. The next prime is 2741501993. The reversal of 2741501981 is 1891051472.

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 a de Polignac number, because none of the positive numbers 2^k-2741501981 is a prime.

It is a super-2 number, since 2×2741501981² = 15031666223653848722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2741501281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320681 + ... + 329118.

It is an arithmetic number, because the mean of its divisors is an integer number (685539000).

Almost surely, 2^2741501981 is an apocalyptic number.

It is an amenable number.

2741501981 is a deficient number, since it is larger than the sum of its proper divisors (654019).

2741501981 is an equidigital number, since it uses as much as digits as its factorization.

2741501981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654018.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 2741501981 is about 52359.3542836426. The cubic root of 2741501981 is about 1399.5750378549.

The spelling of 2741501981 in words is "two billion, seven hundred forty-one million, five hundred one thousand, nine hundred eighty-one".