2488943881 has 2 divisors, whose sum is σ = 2488943882. Its totient is φ = 2488943880.

The previous prime is 2488943867. The next prime is 2488943887. The reversal of 2488943881 is 1883498842.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2134902025 + 354041856 = 46205^2 + 18816^2 .

It is a cyclic number.

It is not a de Polignac number, because 2488943881 - 2⁷ = 2488943753 is a prime.

It is a super-2 number, since 2×2488943881² = 12389683285534684322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2488943887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244471940 + 1244471941.

It is an arithmetic number, because the mean of its divisors is an integer number (1244471941).

Almost surely, 2^2488943881 is an apocalyptic number.

It is an amenable number.

2488943881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2488943881 is an equidigital number, since it uses as much as digits as its factorization.

2488943881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3538944, while the sum is 55.

The square root of 2488943881 is about 49889.3163011882. The cubic root of 2488943881 is about 1355.2051233787.

The spelling of 2488943881 in words is "two billion, four hundred eighty-eight million, nine hundred forty-three thousand, eight hundred eighty-one".