12148091 has 4 divisors (see below), whose sum is σ = 12159000. Its totient is φ = 12137184.

The previous prime is 12148079. The next prime is 12148093. The reversal of 12148091 is 19084121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19084121 = 7 ⋅2726303.

It is a cyclic number.

It is not a de Polignac number, because 12148091 - 2⁶ = 12148027 is a prime.

It is a super-2 number, since 2×12148091² = 295152229888562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12148091.

It is not an unprimeable number, because it can be changed into a prime (12148093) 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, 3566 + ... + 6083.

It is an arithmetic number, because the mean of its divisors is an integer number (3039750).

Almost surely, 2^12148091 is an apocalyptic number.

12148091 is a deficient number, since it is larger than the sum of its proper divisors (10909).

12148091 is an equidigital number, since it uses as much as digits as its factorization.

12148091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10908.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 12148091 is about 3485.4111665627. The cubic root of 12148091 is about 229.8807888841.

The spelling of 12148091 in words is "twelve million, one hundred forty-eight thousand, ninety-one".