139204189191 has 8 divisors (see below), whose sum is σ = 185852733184. Its totient is φ = 92679219000.

The previous prime is 139204189141. The next prime is 139204189211. The reversal of 139204189191 is 191981402931.

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

It is not a de Polignac number, because 139204189191 - 2²¹ = 139202092039 is a prime.

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 139204189191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139204189141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30890821 + ... + 30895326.

It is an arithmetic number, because the mean of its divisors is an integer number (23231591648).

Almost surely, 2^139204189191 is an apocalyptic number.

139204189191 is a deficient number, since it is larger than the sum of its proper divisors (46648543993).

139204189191 is an equidigital number, since it uses as much as digits as its factorization.

139204189191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61786901.

The product of its (nonzero) digits is 139968, while the sum is 48.

The spelling of 139204189191 in words is "one hundred thirty-nine billion, two hundred four million, one hundred eighty-nine thousand, one hundred ninety-one".