11813149 has 2 divisors, whose sum is σ = 11813150. Its totient is φ = 11813148.

The previous prime is 11813143. The next prime is 11813177. The reversal of 11813149 is 94131811.

It is an a-pointer prime, because the next prime (11813177) can be obtained adding 11813149 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 13924 = 3435^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 11813149 - 2¹⁹ = 11288861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11813143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5906574 + 5906575.

It is an arithmetic number, because the mean of its divisors is an integer number (5906575).

Almost surely, 2^11813149 is an apocalyptic number.

It is an amenable number.

11813149 is a deficient number, since it is larger than the sum of its proper divisors (1).

11813149 is an equidigital number, since it uses as much as digits as its factorization.

11813149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The square root of 11813149 is about 3437.0261855273. The cubic root of 11813149 is about 227.7483437058.

The spelling of 11813149 in words is "eleven million, eight hundred thirteen thousand, one hundred forty-nine".