188085379 has 2 divisors, whose sum is σ = 188085380. Its totient is φ = 188085378.

The previous prime is 188085371. The next prime is 188085407. The reversal of 188085379 is 973580881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 188085379 - 2³ = 188085371 is a prime.

It is a super-2 number, since 2×188085379² = 70752219587147282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (188085371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94042689 + 94042690.

It is an arithmetic number, because the mean of its divisors is an integer number (94042690).

Almost surely, 2^188085379 is an apocalyptic number.

188085379 is a deficient number, since it is larger than the sum of its proper divisors (1).

188085379 is an equidigital number, since it uses as much as digits as its factorization.

188085379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 188085379 is about 13714.4222991710. The cubic root of 188085379 is about 572.9521395333.

The spelling of 188085379 in words is "one hundred eighty-eight million, eighty-five thousand, three hundred seventy-nine".