194258442619 has 8 divisors (see below), whose sum is σ = 195762551040. Its totient is φ = 192759408000.

The previous prime is 194258442611. The next prime is 194258442641. The reversal of 194258442619 is 916244852491.

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

It is a cyclic number.

It is not a de Polignac number, because 194258442619 - 2³ = 194258442611 is a prime.

It is a super-2 number, since 2×194258442619² (a number of 23 digits) contains 22 as substring.

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 194258442619.

It is not an unprimeable number, because it can be changed into a prime (194258442611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191564 + ... + 1344745.

It is an arithmetic number, because the mean of its divisors is an integer number (24470318880).

Almost surely, 2^194258442619 is an apocalyptic number.

194258442619 is a deficient number, since it is larger than the sum of its proper divisors (1504108421).

194258442619 is a wasteful number, since it uses less digits than its factorization.

194258442619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536901.

The product of its digits is 4976640, while the sum is 55.

The spelling of 194258442619 in words is "one hundred ninety-four billion, two hundred fifty-eight million, four hundred forty-two thousand, six hundred nineteen".