188444126198 has 4 divisors (see below), whose sum is σ = 282666189300. Its totient is φ = 94222063098.

The previous prime is 188444126179. The next prime is 188444126207. The reversal of 188444126198 is 891621444881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891621444881 = 547 ⋅1630020923.

It is a super-2 number, since 2×188444126198² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47111031548 + ... + 47111031551.

It is an arithmetic number, because the mean of its divisors is an integer number (70666547325).

Almost surely, 2^188444126198 is an apocalyptic number.

188444126198 is a deficient number, since it is larger than the sum of its proper divisors (94222063102).

188444126198 is an equidigital number, since it uses as much as digits as its factorization.

188444126198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94222063101.

The product of its digits is 3538944, while the sum is 56.

The spelling of 188444126198 in words is "one hundred eighty-eight billion, four hundred forty-four million, one hundred twenty-six thousand, one hundred ninety-eight".