2489531956 has 24 divisors (see below), whose sum is σ = 4464166784. Its totient is φ = 1214136000.

The previous prime is 2489531951. The next prime is 2489531971. The reversal of 2489531956 is 6591359842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489531951) 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, 119536 + ... + 138808.

Almost surely, 2^2489531956 is an apocalyptic number.

It is an amenable number.

2489531956 is a deficient number, since it is larger than the sum of its proper divisors (1974634828).

2489531956 is a wasteful number, since it uses less digits than its factorization.

2489531956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20071 (or 20069 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 52.

The square root of 2489531956 is about 49895.2097500351. The cubic root of 2489531956 is about 1355.3118486314.

The spelling of 2489531956 in words is "two billion, four hundred eighty-nine million, five hundred thirty-one thousand, nine hundred fifty-six".