4194218745861 has 8 divisors (see below), whose sum is σ = 5594253191904. Its totient is φ = 2795165065200.

The previous prime is 4194218745809. The next prime is 4194218745877. The reversal of 4194218745861 is 1685478124914.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4194218745861 - 2²² = 4194214551557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4194218745795 and 4194218745804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4194218745961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245181366 + ... + 245198471.

It is an arithmetic number, because the mean of its divisors is an integer number (699281648988).

Almost surely, 2^{4194218745861} is an apocalyptic number.

It is an amenable number.

4194218745861 is a deficient number, since it is larger than the sum of its proper divisors (1400034446043).

4194218745861 is a wasteful number, since it uses less digits than its factorization.

4194218745861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490382691.

The product of its digits is 15482880, while the sum is 60.

The spelling of 4194218745861 in words is "four trillion, one hundred ninety-four billion, two hundred eighteen million, seven hundred forty-five thousand, eight hundred sixty-one".