2489897983 has 4 divisors (see below), whose sum is σ = 2499586560. Its totient is φ = 2480209408.

The previous prime is 2489897981. The next prime is 2489897989. The reversal of 2489897983 is 3897989842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3897989842 = 2 ⋅1948994921.

It is a cyclic number.

It is not a de Polignac number, because 2489897983 - 2¹ = 2489897981 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 (2489897981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4843903 + ... + 4844416.

It is an arithmetic number, because the mean of its divisors is an integer number (624896640).

Almost surely, 2^2489897983 is an apocalyptic number.

2489897983 is a deficient number, since it is larger than the sum of its proper divisors (9688577).

2489897983 is an equidigital number, since it uses as much as digits as its factorization.

2489897983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9688576.

The product of its digits is 62705664, while the sum is 67.

The square root of 2489897983 is about 49898.8775725467. The cubic root of 2489897983 is about 1355.3782675980.

The spelling of 2489897983 in words is "two billion, four hundred eighty-nine million, eight hundred ninety-seven thousand, nine hundred eighty-three".