1149997169 has 2 divisors, whose sum is σ = 1149997170. Its totient is φ = 1149997168.

The previous prime is 1149997157. The next prime is 1149997183. The reversal of 1149997169 is 9617999411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 702886144 + 447111025 = 26512^2 + 21145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149997169 - 2¹² = 1149993073 is a prime.

It is a super-3 number, since 3×1149997169³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1149997109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574998584 + 574998585.

It is an arithmetic number, because the mean of its divisors is an integer number (574998585).

Almost surely, 2^1149997169 is an apocalyptic number.

It is an amenable number.

1149997169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149997169 is an equidigital number, since it uses as much as digits as its factorization.

1149997169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 56.

The square root of 1149997169 is about 33911.6081747829. The cubic root of 1149997169 is about 1047.6886934582.

The spelling of 1149997169 in words is "one billion, one hundred forty-nine million, nine hundred ninety-seven thousand, one hundred sixty-nine".