194789142051 has 8 divisors (see below), whose sum is σ = 296821549824. Its totient is φ = 111308081160.

The previous prime is 194789142049. The next prime is 194789142061. The reversal of 194789142051 is 150241987491.

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

It is not a de Polignac number, because 194789142051 - 2¹ = 194789142049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194789141985 and 194789142003.

It is not an unprimeable number, because it can be changed into a prime (194789142061) 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, 4637836695 + ... + 4637836736.

It is an arithmetic number, because the mean of its divisors is an integer number (37102693728).

Almost surely, 2^194789142051 is an apocalyptic number.

194789142051 is a deficient number, since it is larger than the sum of its proper divisors (102032407773).

194789142051 is an equidigital number, since it uses as much as digits as its factorization.

194789142051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275673441.

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 194789142051 in words is "one hundred ninety-four billion, seven hundred eighty-nine million, one hundred forty-two thousand, fifty-one".