188872349 has 2 divisors, whose sum is σ = 188872350. Its totient is φ = 188872348.

The previous prime is 188872319. The next prime is 188872351. The reversal of 188872349 is 943278881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169468324 + 19404025 = 13018^2 + 4405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188872349 is a prime.

Together with 188872351, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 188872297 and 188872306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188872319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94436174 + 94436175.

It is an arithmetic number, because the mean of its divisors is an integer number (94436175).

Almost surely, 2^188872349 is an apocalyptic number.

It is an amenable number.

188872349 is a deficient number, since it is larger than the sum of its proper divisors (1).

188872349 is an equidigital number, since it uses as much as digits as its factorization.

188872349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The square root of 188872349 is about 13743.0836787091. The cubic root of 188872349 is about 573.7501259566.

The spelling of 188872349 in words is "one hundred eighty-eight million, eight hundred seventy-two thousand, three hundred forty-nine".