188069139 has 6 divisors (see below), whose sum is σ = 271655436. Its totient is φ = 125379420.

The previous prime is 188069117. The next prime is 188069179. The reversal of 188069139 is 931960881.

It is not a de Polignac number, because 188069139 - 2⁵ = 188069107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188069094 and 188069103.

It is not an unprimeable number, because it can be changed into a prime (188069179) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10448277 + ... + 10448294.

It is an arithmetic number, because the mean of its divisors is an integer number (45275906).

Almost surely, 2^188069139 is an apocalyptic number.

188069139 is a deficient number, since it is larger than the sum of its proper divisors (83586297).

188069139 is a wasteful number, since it uses less digits than its factorization.

188069139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20896577 (or 20896574 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 188069139 is about 13713.8302089533. The cubic root of 188069139 is about 572.9356487768.

The spelling of 188069139 in words is "one hundred eighty-eight million, sixty-nine thousand, one hundred thirty-nine".