2185489903 has 2 divisors, whose sum is σ = 2185489904. Its totient is φ = 2185489902.

The previous prime is 2185489879. The next prime is 2185489907. The reversal of 2185489903 is 3099845812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2185489903 - 2²¹ = 2183392751 is a prime.

It is a super-2 number, since 2×2185489903² = 9552732232229898818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185489907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092744951 + 1092744952.

It is an arithmetic number, because the mean of its divisors is an integer number (1092744952).

Almost surely, 2^2185489903 is an apocalyptic number.

2185489903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185489903 is an equidigital number, since it uses as much as digits as its factorization.

2185489903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 2185489903 is about 46749.2235550496. The cubic root of 2185489903 is about 1297.7257877319.

The spelling of 2185489903 in words is "two billion, one hundred eighty-five million, four hundred eighty-nine thousand, nine hundred three".