2381266944 has 240 divisors, whose sum is σ = 8073788800. Its totient is φ = 679477248.

The previous prime is 2381266939. The next prime is 2381266949. The reversal of 2381266944 is 4496621832.

2381266944 is a `hidden beast` number, since 2 + 381 + 266 + 9 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (2381266939) and next prime (2381266949).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2381266944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381266949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3096192 + ... + 3096960.

Almost surely, 2^2381266944 is an apocalyptic number.

2381266944 is a gapful number since it is divisible by the number (24) 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 2381266944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4036894400).

2381266944 is an abundant number, since it is smaller than the sum of its proper divisors (5692521856).

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

2381266944 is an frugal number, since it uses more digits than its factorization.

2381266944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 781 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 2381266944 is about 48798.2268530323. The cubic root of 2381266944 is about 1335.3733181436.

The spelling of 2381266944 in words is "two billion, three hundred eighty-one million, two hundred sixty-six thousand, nine hundred forty-four".