381749265715 has 4 divisors (see below), whose sum is σ = 458099118864. Its totient is φ = 305399412568.

The previous prime is 381749265713. The next prime is 381749265731. The reversal of 381749265715 is 517562947183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517562947183 = 8597 ⋅60202739.

It is a cyclic number.

It is not a de Polignac number, because 381749265715 - 2¹ = 381749265713 is a prime.

It is a super-2 number, since 2×381749265715² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381749265715.

It is not an unprimeable number, because it can be changed into a prime (381749265713) 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 3 ways as a sum of consecutive naturals, for example, 38174926567 + ... + 38174926576.

It is an arithmetic number, because the mean of its divisors is an integer number (114524779716).

Almost surely, 2^381749265715 is an apocalyptic number.

381749265715 is a deficient number, since it is larger than the sum of its proper divisors (76349853149).

381749265715 is an equidigital number, since it uses as much as digits as its factorization.

381749265715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76349853148.

The product of its digits is 12700800, while the sum is 58.

The spelling of 381749265715 in words is "three hundred eighty-one billion, seven hundred forty-nine million, two hundred sixty-five thousand, seven hundred fifteen".