11811902 has 8 divisors (see below), whose sum is σ = 17917200. Its totient is φ = 5839504.

The previous prime is 11811887. The next prime is 11811913. The reversal of 11811902 is 20911811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33002 + ... + 33357.

It is an arithmetic number, because the mean of its divisors is an integer number (2239650).

Almost surely, 2^11811902 is an apocalyptic number.

11811902 is a deficient number, since it is larger than the sum of its proper divisors (6105298).

11811902 is an equidigital number, since it uses as much as digits as its factorization.

11811902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66450.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11811902 is about 3436.8447739169. The cubic root of 11811902 is about 227.7403296931.

Subtracting 11811902 from its reverse (20911811), we obtain a palindrome (9099909).

The spelling of 11811902 in words is "eleven million, eight hundred eleven thousand, nine hundred two".