2381390749 has 8 divisors (see below), whose sum is σ = 2387926080. Its totient is φ = 2374864800.

The previous prime is 2381390747. The next prime is 2381390779. The reversal of 2381390749 is 9470931832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2381390749 - 2¹ = 2381390747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2381390699 and 2381390708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381390747) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1029304 + ... + 1031614.

It is an arithmetic number, because the mean of its divisors is an integer number (298490760).

Almost surely, 2^2381390749 is an apocalyptic number.

It is an amenable number.

2381390749 is a deficient number, since it is larger than the sum of its proper divisors (6535331).

2381390749 is a wasteful number, since it uses less digits than its factorization.

2381390749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 2381390749 is about 48799.4953764893. The cubic root of 2381390749 is about 1335.3964603101.

The spelling of 2381390749 in words is "two billion, three hundred eighty-one million, three hundred ninety thousand, seven hundred forty-nine".