2381858813 has 2 divisors, whose sum is σ = 2381858814. Its totient is φ = 2381858812.

The previous prime is 2381858807. The next prime is 2381858839. The reversal of 2381858813 is 3188581832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1380642649 + 1001216164 = 37157^2 + 31642^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381858813 - 2²⁶ = 2314749949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381858803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190929406 + 1190929407.

It is an arithmetic number, because the mean of its divisors is an integer number (1190929407).

Almost surely, 2^2381858813 is an apocalyptic number.

It is an amenable number.

2381858813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381858813 is an equidigital number, since it uses as much as digits as its factorization.

2381858813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 47.

The square root of 2381858813 is about 48804.2909281551. The cubic root of 2381858813 is about 1335.4839456115.

The spelling of 2381858813 in words is "two billion, three hundred eighty-one million, eight hundred fifty-eight thousand, eight hundred thirteen".