194509099890366 has 32 divisors (see below), whose sum is σ = 393030647216928. Its totient is φ = 64167632025600.

The previous prime is 194509099890361. The next prime is 194509099890431. The reversal of 194509099890366 is 663098990905491.

It is a super-2 number, since 2×194509099890366² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194509099890291 and 194509099890300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194509099890361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135891016 + ... + 137314916.

It is an arithmetic number, because the mean of its divisors is an integer number (12282207725529).

Almost surely, 2^{194509099890366} is an apocalyptic number.

194509099890366 is an abundant number, since it is smaller than the sum of its proper divisors (198521547326562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194509099890366 is a wasteful number, since it uses less digits than its factorization.

194509099890366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658716.

The product of its (nonzero) digits is 1020366720, while the sum is 78.

The spelling of 194509099890366 in words is "one hundred ninety-four trillion, five hundred nine billion, ninety-nine million, eight hundred ninety thousand, three hundred sixty-six".