2381597940 has 96 divisors (see below), whose sum is σ = 7245987840. Its totient is φ = 582249600.

The previous prime is 2381597899. The next prime is 2381597963. The reversal of 2381597940 is 497951832.

It is a super-3 number, since 3×2381597940³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2381597940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1645 + ... + 69035.

It is an arithmetic number, because the mean of its divisors is an integer number (75479040).

Almost surely, 2^2381597940 is an apocalyptic number.

2381597940 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 2381597940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3622993920).

2381597940 is an abundant number, since it is smaller than the sum of its proper divisors (4864389900).

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

2381597940 is a wasteful number, since it uses less digits than its factorization.

2381597940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67453 (or 67451 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 2381597940 is about 48801.6182108749. The cubic root of 2381597940 is about 1335.4351875545.

The spelling of 2381597940 in words is "two billion, three hundred eighty-one million, five hundred ninety-seven thousand, nine hundred forty".