13811146 has 4 divisors (see below), whose sum is σ = 20716722. Its totient is φ = 6905572.

The previous prime is 13811131. The next prime is 13811159. The reversal of 13811146 is 64111831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 2217121 = 3405^2 + 1489^2 .

It is a super-3 number, since 3×13811146³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13811146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3452785 + ... + 3452788.

Almost surely, 2^13811146 is an apocalyptic number.

13811146 is a deficient number, since it is larger than the sum of its proper divisors (6905576).

13811146 is an equidigital number, since it uses as much as digits as its factorization.

13811146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905575.

The product of its digits is 576, while the sum is 25.

The square root of 13811146 is about 3716.3350225726. The cubic root of 13811146 is about 239.9255903583.

Adding to 13811146 its reverse (64111831), we get a palindrome (77922977).

The spelling of 13811146 in words is "thirteen million, eight hundred eleven thousand, one hundred forty-six".