2185381465429 has 2 divisors, whose sum is σ = 2185381465430. Its totient is φ = 2185381465428.

The previous prime is 2185381465417. The next prime is 2185381465441. The reversal of 2185381465429 is 9245641835812.

It is a balanced prime because it is at equal distance from previous prime (2185381465417) and next prime (2185381465441).

It can be written as a sum of positive squares in only one way, i.e., 1289893990225 + 895487475204 = 1135735^2 + 946302^2 .

It is a cyclic number.

It is not a de Polignac number, because 2185381465429 - 2²⁵ = 2185347910997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185381465459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092690732714 + 1092690732715.

It is an arithmetic number, because the mean of its divisors is an integer number (1092690732715).

Almost surely, 2^{2185381465429} is an apocalyptic number.

It is an amenable number.

2185381465429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185381465429 is an equidigital number, since it uses as much as digits as its factorization.

2185381465429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16588800, while the sum is 58.

The spelling of 2185381465429 in words is "two trillion, one hundred eighty-five billion, three hundred eighty-one million, four hundred sixty-five thousand, four hundred twenty-nine".