188838851 has 2 divisors, whose sum is σ = 188838852. Its totient is φ = 188838850.

The previous prime is 188838827. The next prime is 188838857. The reversal of 188838851 is 158838881.

It is a happy number.

188838851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (158838881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188838851 - 2²² = 184644547 is a prime.

It is a super-2 number, since 2×188838851² = 71320223294000402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 188838851.

It is not a weakly prime, because it can be changed into another prime (188838857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94419425 + 94419426.

It is an arithmetic number, because the mean of its divisors is an integer number (94419426).

Almost surely, 2^188838851 is an apocalyptic number.

188838851 is a deficient number, since it is larger than the sum of its proper divisors (1).

188838851 is an equidigital number, since it uses as much as digits as its factorization.

188838851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 491520, while the sum is 50.

The square root of 188838851 is about 13741.8649025523. The cubic root of 188838851 is about 573.7162042485.

The spelling of 188838851 in words is "one hundred eighty-eight million, eight hundred thirty-eight thousand, eight hundred fifty-one".