13189005 has 24 divisors (see below), whose sum is σ = 23856768. Its totient is φ = 6727776.

The previous prime is 13188979. The next prime is 13189009. The reversal of 13189005 is 50098131.

It is not a de Polignac number, because 13189005 - 2⁶ = 13188941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13189005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13189009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5337 + ... + 7406.

It is an arithmetic number, because the mean of its divisors is an integer number (994032).

Almost surely, 2^13189005 is an apocalyptic number.

13189005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13189005 is a deficient number, since it is larger than the sum of its proper divisors (10667763).

13189005 is a wasteful number, since it uses less digits than its factorization.

13189005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12777 (or 12774 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 13189005 is about 3631.6669726174. Note that the first 3 decimals coincide. The cubic root of 13189005 is about 236.2675136089.

The spelling of 13189005 in words is "thirteen million, one hundred eighty-nine thousand, five".