1188444438097 has 16 divisors (see below), whose sum is σ = 1405244816640. Its totient is φ = 983409077952.

The previous prime is 1188444438053. The next prime is 1188444438131. The reversal of 1188444438097 is 7908344448811.

It is a happy number.

It is not a de Polignac number, because 1188444438097 - 2¹⁹ = 1188443913809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1188444438197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1150788 + ... + 1923850.

It is an arithmetic number, because the mean of its divisors is an integer number (87827801040).

Almost surely, 2^{1188444438097} is an apocalyptic number.

It is an amenable number.

1188444438097 is a deficient number, since it is larger than the sum of its proper divisors (216800378543).

1188444438097 is an equidigital number, since it uses as much as digits as its factorization.

1188444438097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780672.

The product of its (nonzero) digits is 24772608, while the sum is 61.

The spelling of 1188444438097 in words is "one trillion, one hundred eighty-eight billion, four hundred forty-four million, four hundred thirty-eight thousand, ninety-seven".