2385405738809 has 2 divisors, whose sum is σ = 2385405738810. Its totient is φ = 2385405738808.

The previous prime is 2385405738799. The next prime is 2385405738883. The reversal of 2385405738809 is 9088375045832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2227436851600 + 157968887209 = 1492460^2 + 397453^2 .

It is a cyclic number.

It is not a de Polignac number, because 2385405738809 - 2³⁶ = 2316686262073 is a prime.

It is a super-2 number, since 2×2385405738809² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2385405731809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1192702869404 + 1192702869405.

It is an arithmetic number, because the mean of its divisors is an integer number (1192702869405).

Almost surely, 2^{2385405738809} is an apocalyptic number.

It is an amenable number.

2385405738809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2385405738809 is an equidigital number, since it uses as much as digits as its factorization.

2385405738809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 2385405738809 in words is "two trillion, three hundred eighty-five billion, four hundred five million, seven hundred thirty-eight thousand, eight hundred nine".