188715047 has 2 divisors, whose sum is σ = 188715048. Its totient is φ = 188715046.

The previous prime is 188715017. The next prime is 188715053. The reversal of 188715047 is 740517881.

It is a strong prime.

It is an emirp because it is prime and its reverse (740517881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188715047 - 2¹⁶ = 188649511 is a prime.

It is a super-2 number, since 2×188715047² = 71226737928424418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188714995 and 188715013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188715017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94357523 + 94357524.

It is an arithmetic number, because the mean of its divisors is an integer number (94357524).

Almost surely, 2^188715047 is an apocalyptic number.

188715047 is a deficient number, since it is larger than the sum of its proper divisors (1).

188715047 is an equidigital number, since it uses as much as digits as its factorization.

188715047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 188715047 is about 13737.3595352236. The cubic root of 188715047 is about 573.5907994594.

The spelling of 188715047 in words is "one hundred eighty-eight million, seven hundred fifteen thousand, forty-seven".