194132139 has 8 divisors (see below), whose sum is σ = 272466240. Its totient is φ = 122609736.

The previous prime is 194132117. The next prime is 194132153. The reversal of 194132139 is 931231491.

It is a happy number.

194132139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 194132139 - 2²⁵ = 160577707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194132179) 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, 1702857 + ... + 1702970.

It is an arithmetic number, because the mean of its divisors is an integer number (34058280).

Almost surely, 2^194132139 is an apocalyptic number.

194132139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

194132139 is a deficient number, since it is larger than the sum of its proper divisors (78334101).

194132139 is a wasteful number, since it uses less digits than its factorization.

194132139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405849.

The product of its digits is 5832, while the sum is 33.

The square root of 194132139 is about 13933.1309833791. The cubic root of 194132139 is about 579.0274416434.

The spelling of 194132139 in words is "one hundred ninety-four million, one hundred thirty-two thousand, one hundred thirty-nine".