2630731840 has 112 divisors (see below), whose sum is σ = 6851782080. Its totient is φ = 954132480.

The previous prime is 2630731801. The next prime is 2630731841. The reversal of 2630731840 is 481370362.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2630731796 and 2630731805.

It is not an unprimeable number, because it can be changed into a prime (2630731841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840246 + ... + 1841674.

Almost surely, 2^2630731840 is an apocalyptic number.

2630731840 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 2630731840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3425891040).

2630731840 is an abundant number, since it is smaller than the sum of its proper divisors (4221050240).

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

2630731840 is a wasteful number, since it uses less digits than its factorization.

2630731840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 2630731840 is about 51290.6603583927. The cubic root of 2630731840 is about 1380.4654034820.

The spelling of 2630731840 in words is "two billion, six hundred thirty million, seven hundred thirty-one thousand, eight hundred forty".