11398338169 has 9 divisors (see below), whose sum is σ = 11471725839. Its totient is φ = 11325419040.

The previous prime is 11398338121. The next prime is 11398338179. The reversal of 11398338169 is 96183389311.

It is a happy number.

The square root of 11398338169 is 106763.

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

It can be written as a sum of positive squares in only one way, i.e., 8572352569 + 2825985600 = 92587^2 + 53160^2 .

It is not a de Polignac number, because 11398338169 - 2¹¹ = 11398336121 is a prime.

It is a super-2 number, since 2×11398338169² (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 (11398338179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25729662 + ... + 25730104.

Almost surely, 2^11398338169 is an apocalyptic number.

11398338169 is the 106763-rd square number.

11398338169 is the 53382-nd centered octagonal number.

It is an amenable number.

11398338169 is a deficient number, since it is larger than the sum of its proper divisors (73387670).

11398338169 is an frugal number, since it uses more digits than its factorization.

11398338169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 684 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The spelling of 11398338169 in words is "eleven billion, three hundred ninety-eight million, three hundred thirty-eight thousand, one hundred sixty-nine".