694042424189 has 4 divisors (see below), whose sum is σ = 700780700256. Its totient is φ = 687304148124.

The previous prime is 694042424177. The next prime is 694042424267. The reversal of 694042424189 is 981424240496.

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 a de Polignac number, because none of the positive numbers 2^k-694042424189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 694042424189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694042424149) 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, 3369137879 + ... + 3369138084.

It is an arithmetic number, because the mean of its divisors is an integer number (175195175064).

Almost surely, 2^694042424189 is an apocalyptic number.

It is an amenable number.

694042424189 is a deficient number, since it is larger than the sum of its proper divisors (6738276067).

694042424189 is a wasteful number, since it uses less digits than its factorization.

694042424189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6738276066.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 694042424189 in words is "six hundred ninety-four billion, forty-two million, four hundred twenty-four thousand, one hundred eighty-nine".