2185900741859 has 2 divisors, whose sum is σ = 2185900741860. Its totient is φ = 2185900741858.

The previous prime is 2185900741853. The next prime is 2185900741861. The reversal of 2185900741859 is 9581470095812.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2185900741859 is a prime.

It is a super-3 number, since 3×2185900741859³ (a number of 38 digits) contains 333 as substring.

Together with 2185900741861, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2185900741798 and 2185900741807.

It is not a weakly prime, because it can be changed into another prime (2185900741853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092950370929 + 1092950370930.

It is an arithmetic number, because the mean of its divisors is an integer number (1092950370930).

Almost surely, 2^{2185900741859} is an apocalyptic number.

2185900741859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185900741859 is an equidigital number, since it uses as much as digits as its factorization.

2185900741859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 59.

The spelling of 2185900741859 in words is "two trillion, one hundred eighty-five billion, nine hundred million, seven hundred forty-one thousand, eight hundred fifty-nine".