188149243 has 2 divisors, whose sum is σ = 188149244. Its totient is φ = 188149242.

The previous prime is 188149237. The next prime is 188149249. The reversal of 188149243 is 342941881.

It is a balanced prime because it is at equal distance from previous prime (188149237) and next prime (188149249).

It is a cyclic number.

It is not a de Polignac number, because 188149243 - 2⁹ = 188148731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188149196 and 188149205.

It is not a weakly prime, because it can be changed into another prime (188149249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94074621 + 94074622.

It is an arithmetic number, because the mean of its divisors is an integer number (94074622).

Almost surely, 2^188149243 is an apocalyptic number.

188149243 is a deficient number, since it is larger than the sum of its proper divisors (1).

188149243 is an equidigital number, since it uses as much as digits as its factorization.

188149243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 188149243 is about 13716.7504533690. The cubic root of 188149243 is about 573.0169804316.

The spelling of 188149243 in words is "one hundred eighty-eight million, one hundred forty-nine thousand, two hundred forty-three".