194064891379 has 8 divisors (see below), whose sum is σ = 202573942560. Its totient is φ = 185561794176.

The previous prime is 194064891289. The next prime is 194064891389. The reversal of 194064891379 is 973198460491.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194064891379 is a prime.

It is a super-2 number, since 2×194064891379² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (194064891389) 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, 1421814 + ... + 1552315.

It is an arithmetic number, because the mean of its divisors is an integer number (25321742820).

Almost surely, 2^194064891379 is an apocalyptic number.

194064891379 is a deficient number, since it is larger than the sum of its proper divisors (8509051181).

194064891379 is a wasteful number, since it uses less digits than its factorization.

194064891379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976989.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 194064891379 in words is "one hundred ninety-four billion, sixty-four million, eight hundred ninety-one thousand, three hundred seventy-nine".