194761128390 has 16 divisors (see below), whose sum is σ = 467426708208. Its totient is φ = 51936300896.

The previous prime is 194761128379. The next prime is 194761128403. The reversal of 194761128390 is 93821167491.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3246018777 + ... + 3246018836.

It is an arithmetic number, because the mean of its divisors is an integer number (29214169263).

Almost surely, 2^194761128390 is an apocalyptic number.

194761128390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194761128390 is an abundant number, since it is smaller than the sum of its proper divisors (272665579818).

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

194761128390 is a wasteful number, since it uses less digits than its factorization.

194761128390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492037623.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 194761128390 in words is "one hundred ninety-four billion, seven hundred sixty-one million, one hundred twenty-eight thousand, three hundred ninety".