11993097169 has 9 divisors (see below), whose sum is σ = 12128754897. Its totient is φ = 11858943744.

The previous prime is 11993097167. The next prime is 11993097227. The reversal of 11993097169 is 96179039911.

The square root of 11993097169 is 109513.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3178140625 + 8814956544 = 56375^2 + 93888^2 .

It is not a de Polignac number, because 11993097169 - 2¹ = 11993097167 is a prime.

It is a super-2 number, since 2×11993097169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11993097163) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10622197 + ... + 10623325.

It is an arithmetic number, because the mean of its divisors is an integer number (1347639433).

Almost surely, 2^11993097169 is an apocalyptic number.

11993097169 is the 109513-rd square number.

11993097169 is the 54757-th centered octagonal number.

It is an amenable number.

11993097169 is a deficient number, since it is larger than the sum of its proper divisors (135657728).

11993097169 is an frugal number, since it uses more digits than its factorization.

11993097169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 826686, while the sum is 55.

The spelling of 11993097169 in words is "eleven billion, nine hundred ninety-three million, ninety-seven thousand, one hundred sixty-nine".