11518397 has 4 divisors (see below), whose sum is σ = 12565536. Its totient is φ = 10471260.

The previous prime is 11518373. The next prime is 11518399. The reversal of 11518397 is 79381511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11518397 - 2¹² = 11514301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11518399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523553 + ... + 523574.

It is an arithmetic number, because the mean of its divisors is an integer number (3141384).

Almost surely, 2^11518397 is an apocalyptic number.

It is an amenable number.

11518397 is a deficient number, since it is larger than the sum of its proper divisors (1047139).

11518397 is a wasteful number, since it uses less digits than its factorization.

11518397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047138.

The product of its digits is 7560, while the sum is 35.

The square root of 11518397 is about 3393.8763972779. The cubic root of 11518397 is about 225.8381708847.

The spelling of 11518397 in words is "eleven million, five hundred eighteen thousand, three hundred ninety-seven".