11801838 has 8 divisors (see below), whose sum is σ = 23603688. Its totient is φ = 3933944.

The previous prime is 11801827. The next prime is 11801861. The reversal of 11801838 is 83810811.

11801838 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

11801838 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983481 + ... + 983492.

It is an arithmetic number, because the mean of its divisors is an integer number (2950461).

Almost surely, 2^11801838 is an apocalyptic number.

11801838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11801838 is a wasteful number, since it uses less digits than its factorization.

11801838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966978.

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 11801838 is about 3435.3803282897. The cubic root of 11801838 is about 227.6756313935.

The spelling of 11801838 in words is "eleven million, eight hundred one thousand, eight hundred thirty-eight".