11118157 has 4 divisors (see below), whose sum is σ = 11137500. Its totient is φ = 11098816.

The previous prime is 11118143. The next prime is 11118161. The reversal of 11118157 is 75181111.

11118157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75181111 = 97 ⋅775063.

It can be written as a sum of positive squares in 2 ways, for example, as 7001316 + 4116841 = 2646^2 + 2029^2 .

It is a cyclic number.

It is not a de Polignac number, because 11118157 - 2¹¹ = 11116109 is a prime.

It is a super-2 number, since 2×11118157² = 247226830153298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11118127) 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, 8782 + ... + 9967.

It is an arithmetic number, because the mean of its divisors is an integer number (2784375).

Almost surely, 2^11118157 is an apocalyptic number.

It is an amenable number.

11118157 is a deficient number, since it is larger than the sum of its proper divisors (19343).

11118157 is an equidigital number, since it uses as much as digits as its factorization.

11118157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19342.

The product of its digits is 280, while the sum is 25.

The square root of 11118157 is about 3334.3900491694. The cubic root of 11118157 is about 223.1914742293.

Adding to 11118157 its reverse (75181111), we get a palindrome (86299268).

The spelling of 11118157 in words is "eleven million, one hundred eighteen thousand, one hundred fifty-seven".