2981771893 has 8 divisors (see below), whose sum is σ = 2997200448. Its totient is φ = 2966363904.

The previous prime is 2981771869. The next prime is 2981771963. The reversal of 2981771893 is 3981771892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2981771893 - 2⁹ = 2981771381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981771803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346005 + ... + 354517.

It is an arithmetic number, because the mean of its divisors is an integer number (374650056).

Almost surely, 2^2981771893 is an apocalyptic number.

It is an amenable number.

2981771893 is a deficient number, since it is larger than the sum of its proper divisors (15428555).

2981771893 is a wasteful number, since it uses less digits than its factorization.

2981771893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10283.

The product of its digits is 1524096, while the sum is 55.

The square root of 2981771893 is about 54605.6031282505. The cubic root of 2981771893 is about 1439.3225808380.

Subtracting 2981771893 from its reverse (3981771892), we obtain a palindrome (999999999).

The spelling of 2981771893 in words is "two billion, nine hundred eighty-one million, seven hundred seventy-one thousand, eight hundred ninety-three".