2385186813 has 6 divisors (see below), whose sum is σ = 3445269854. Its totient is φ = 1590124536.

The previous prime is 2385186781. The next prime is 2385186829. The reversal of 2385186813 is 3186815832.

It can be written as a sum of positive squares in only one way, i.e., 2130560964 + 254625849 = 46158^2 + 15957^2 .

It is not a de Polignac number, because 2385186813 - 2⁵ = 2385186781 is a prime.

It is a super-3 number, since 3×2385186813³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2385186883) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 132510370 + ... + 132510387.

Almost surely, 2^2385186813 is an apocalyptic number.

It is an amenable number.

2385186813 is a deficient number, since it is larger than the sum of its proper divisors (1060083041).

2385186813 is a wasteful number, since it uses less digits than its factorization.

2385186813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265020763 (or 265020760 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 2385186813 is about 48838.3743894082. The cubic root of 2385186813 is about 1336.1056480347.

The spelling of 2385186813 in words is "two billion, three hundred eighty-five million, one hundred eighty-six thousand, eight hundred thirteen".