2194815334897 has 4 divisors (see below), whose sum is σ = 2212097345536. Its totient is φ = 2177533324260.

The previous prime is 2194815334837. The next prime is 2194815334903. The reversal of 2194815334897 is 7984335184912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2194815334897 - 2¹⁵ = 2194815302129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2194815334807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8641005129 + ... + 8641005382.

It is an arithmetic number, because the mean of its divisors is an integer number (553024336384).

Almost surely, 2^{2194815334897} is an apocalyptic number.

It is an amenable number.

2194815334897 is a deficient number, since it is larger than the sum of its proper divisors (17282010639).

2194815334897 is a wasteful number, since it uses less digits than its factorization.

2194815334897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17282010638.

The product of its digits is 52254720, while the sum is 64.

The spelling of 2194815334897 in words is "two trillion, one hundred ninety-four billion, eight hundred fifteen million, three hundred thirty-four thousand, eight hundred ninety-seven".