188444126243 has 2 divisors, whose sum is σ = 188444126244. Its totient is φ = 188444126242.

The previous prime is 188444126207. The next prime is 188444126249. The reversal of 188444126243 is 342621444881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 188444126243 - 2⁶ = 188444126179 is a prime.

It is a super-2 number, since 2×188444126243² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (188444126249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94222063121 + 94222063122.

It is an arithmetic number, because the mean of its divisors is an integer number (94222063122).

Almost surely, 2^188444126243 is an apocalyptic number.

188444126243 is a deficient number, since it is larger than the sum of its proper divisors (1).

188444126243 is an equidigital number, since it uses as much as digits as its factorization.

188444126243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1179648, while the sum is 47.

The spelling of 188444126243 in words is "one hundred eighty-eight billion, four hundred forty-four million, one hundred twenty-six thousand, two hundred forty-three".