11918097 has 10 divisors (see below), whose sum is σ = 17803698. Its totient is φ = 7945344.

The previous prime is 11918087. The next prime is 11918171. The reversal of 11918097 is 79081911.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 1185921 = 3276^2 + 1089^2 .

It is not a de Polignac number, because 11918097 - 2¹¹ = 11916049 is a prime.

It is a super-2 number, since 2×11918097² = 284082072202818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11918087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 73488 + ... + 73649.

Almost surely, 2^11918097 is an apocalyptic number.

It is an amenable number.

11918097 is a deficient number, since it is larger than the sum of its proper divisors (5885601).

11918097 is an equidigital number, since it uses as much as digits as its factorization.

11918097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147149 (or 147140 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 11918097 is about 3452.2596947507. The cubic root of 11918097 is about 228.4207949287.

The spelling of 11918097 in words is "eleven million, nine hundred eighteen thousand, ninety-seven".