2385981002381 has 4 divisors (see below), whose sum is σ = 2409604576764. Its totient is φ = 2362357428000.

The previous prime is 2385981002371. The next prime is 2385981002389. The reversal of 2385981002381 is 1832001895832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1555859570281 + 830121432100 = 1247341^2 + 911110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2385981002381 - 2¹⁰ = 2385981001357 is a prime.

It is a super-2 number, since 2×2385981002381² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2385981002389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11811787040 + ... + 11811787241.

It is an arithmetic number, because the mean of its divisors is an integer number (602401144191).

Almost surely, 2^{2385981002381} is an apocalyptic number.

It is an amenable number.

2385981002381 is a deficient number, since it is larger than the sum of its proper divisors (23623574383).

2385981002381 is a wasteful number, since it uses less digits than its factorization.

2385981002381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23623574382.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 2385981002381 in words is "two trillion, three hundred eighty-five billion, nine hundred eighty-one million, two thousand, three hundred eighty-one".