2381003640 has 128 divisors (see below), whose sum is σ = 7960680000. Its totient is φ = 633014784.

The previous prime is 2381003627. The next prime is 2381003657. The reversal of 2381003640 is 463001832.

It is a happy number.

2381003640 is a `hidden beast` number, since 2 + 3 + 8 + 10 + 0 + 3 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373762 + ... + 380078.

Almost surely, 2^2381003640 is an apocalyptic number.

2381003640 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 2381003640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3980340000).

2381003640 is an abundant number, since it is smaller than the sum of its proper divisors (5579676360).

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

2381003640 is a wasteful number, since it uses less digits than its factorization.

2381003640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6686 (or 6676 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2381003640 is about 48795.5288935370. The cubic root of 2381003640 is about 1335.3240975529.

The spelling of 2381003640 in words is "two billion, three hundred eighty-one million, three thousand, six hundred forty".