1197144137 has 6 divisors (see below), whose sum is σ = 1392596298. Its totient is φ = 1026123504.

The previous prime is 1197144133. The next prime is 1197144163. The reversal of 1197144137 is 7314417911.

It can be written as a sum of positive squares in only one way, i.e., 1172651536 + 24492601 = 34244^2 + 4949^2 .

It is not a de Polignac number, because 1197144137 - 2² = 1197144133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1197144137.

It is not an unprimeable number, because it can be changed into a prime (1197144133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12215708 + ... + 12215805.

It is an arithmetic number, because the mean of its divisors is an integer number (232099383).

Almost surely, 2^1197144137 is an apocalyptic number.

It is an amenable number.

1197144137 is a deficient number, since it is larger than the sum of its proper divisors (195452161).

1197144137 is an equidigital number, since it uses as much as digits as its factorization.

1197144137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24431527 (or 24431520 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 1197144137 is about 34599.7707651366. The cubic root of 1197144137 is about 1061.8148975227.

The spelling of 1197144137 in words is "one billion, one hundred ninety-seven million, one hundred forty-four thousand, one hundred thirty-seven".