2938621440 has 160 divisors (see below), whose sum is σ = 9698236416. Its totient is φ = 758292480.

The previous prime is 2938621429. The next prime is 2938621457. The reversal of 2938621440 is 441268392.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231909 + ... + 244251.

Almost surely, 2^2938621440 is an apocalyptic number.

2938621440 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 2938621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4849118208).

2938621440 is an abundant number, since it is smaller than the sum of its proper divisors (6759614976).

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

2938621440 is a wasteful number, since it uses less digits than its factorization.

2938621440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400 (or 12384 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 2938621440 is about 54209.0531184598. The cubic root of 2938621440 is about 1432.3458066477.

The spelling of 2938621440 in words is "two billion, nine hundred thirty-eight million, six hundred twenty-one thousand, four hundred forty".