11838157 has 4 divisors (see below), whose sum is σ = 11971260. Its totient is φ = 11705056.

The previous prime is 11838131. The next prime is 11838179. The reversal of 11838157 is 75183811.

11838157 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: 75183811 = 2131 ⋅35281.

It can be written as a sum of positive squares in 2 ways, for example, as 4076361 + 7761796 = 2019^2 + 2786^2 .

It is a cyclic number.

It is not a de Polignac number, because 11838157 - 2²³ = 3449549 is a prime.

It is a super-2 number, since 2×11838157² = 280283922313298, 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 (11838107) 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, 66418 + ... + 66595.

It is an arithmetic number, because the mean of its divisors is an integer number (2992815).

Almost surely, 2^11838157 is an apocalyptic number.

It is an amenable number.

11838157 is a deficient number, since it is larger than the sum of its proper divisors (133103).

11838157 is an equidigital number, since it uses as much as digits as its factorization.

11838157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133102.

The product of its digits is 6720, while the sum is 34.

The square root of 11838157 is about 3440.6622908969. The cubic root of 11838157 is about 227.9089420420.

The spelling of 11838157 in words is "eleven million, eight hundred thirty-eight thousand, one hundred fifty-seven".