11908138 has 16 divisors (see below), whose sum is σ = 19539936. Its totient is φ = 5397840.

The previous prime is 11908133. The next prime is 11908157. The reversal of 11908138 is 83180911.

11908138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11908133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13045 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (1221246).

Almost surely, 2^11908138 is an apocalyptic number.

11908138 is a deficient number, since it is larger than the sum of its proper divisors (7631798).

11908138 is a wasteful number, since it uses less digits than its factorization.

11908138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 11908138 is about 3450.8170047106. The cubic root of 11908138 is about 228.3571528717.

The spelling of 11908138 in words is "eleven million, nine hundred eight thousand, one hundred thirty-eight".