11601903 has 16 divisors (see below), whose sum is σ = 15966720. Its totient is φ = 7489536.

The previous prime is 11601901. The next prime is 11601911. The reversal of 11601903 is 30910611.

It is a happy number.

It is not a de Polignac number, because 11601903 - 2¹ = 11601901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11601903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14703 + ... + 15471.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^11601903 is an apocalyptic number.

11601903 is a deficient number, since it is larger than the sum of its proper divisors (4364817).

11601903 is a wasteful number, since it uses less digits than its factorization.

11601903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 11601903 is about 3406.1566317479. The cubic root of 11601903 is about 226.3826173251.

The spelling of 11601903 in words is "eleven million, six hundred one thousand, nine hundred three".