2489126640 has 480 divisors, whose sum is σ = 10430332416. Its totient is φ = 476835840.

The previous prime is 2489126623. The next prime is 2489126663. The reversal of 2489126640 is 466219842.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2489126592 and 2489126601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3122722 + ... + 3123518.

Almost surely, 2^2489126640 is an apocalyptic number.

2489126640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2489126640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5215166208).

2489126640 is an abundant number, since it is smaller than the sum of its proper divisors (7941205776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2489126640 is a wasteful number, since it uses less digits than its factorization.

2489126640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 2489126640 is about 49891.1479122299. The cubic root of 2489126640 is about 1355.2382927178.

It can be divided in two parts, 248912 and 6640, that added together give a palindrome (255552).

The spelling of 2489126640 in words is "two billion, four hundred eighty-nine million, one hundred twenty-six thousand, six hundred forty".