2185196730867 has 12 divisors (see below), whose sum is σ = 3156471536400. Its totient is φ = 1456762624368.

The previous prime is 2185196730863. The next prime is 2185196730869. The reversal of 2185196730867 is 7680376915812.

2185196730867 is a `hidden beast` number, since 2 + 1 + 8 + 519 + 6 + 7 + 30 + 86 + 7 = 666.

It is not a de Polignac number, because 2185196730867 - 2² = 2185196730863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2185196730863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2536992 + ... + 3287357.

It is an arithmetic number, because the mean of its divisors is an integer number (263039294700).

Almost surely, 2^{2185196730867} is an apocalyptic number.

2185196730867 is a deficient number, since it is larger than the sum of its proper divisors (971274805533).

2185196730867 is a wasteful number, since it uses less digits than its factorization.

2185196730867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866042 (or 5866039 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 2185196730867 in words is "two trillion, one hundred eighty-five billion, one hundred ninety-six million, seven hundred thirty thousand, eight hundred sixty-seven".