2891881983 has 8 divisors (see below), whose sum is σ = 3928594608. Its totient is φ = 1891545344.

The previous prime is 2891881969. The next prime is 2891882003. The reversal of 2891881983 is 3891881982.

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 2891881983 - 2⁶ = 2891881919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891883983) 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, 9093810 + ... + 9094127.

It is an arithmetic number, because the mean of its divisors is an integer number (491074326).

Almost surely, 2^2891881983 is an apocalyptic number.

2891881983 is a deficient number, since it is larger than the sum of its proper divisors (1036712625).

2891881983 is a wasteful number, since it uses less digits than its factorization.

2891881983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187993.

The product of its digits is 1990656, while the sum is 57.

The square root of 2891881983 is about 53776.2213529363. The cubic root of 2891881983 is about 1424.7112550080.

Subtracting 2891881983 from its reverse (3891881982), we obtain a palindrome (999999999).

The spelling of 2891881983 in words is "two billion, eight hundred ninety-one million, eight hundred eighty-one thousand, nine hundred eighty-three".