13149903 has 16 divisors (see below), whose sum is σ = 19000800. Its totient is φ = 8041344.

The previous prime is 13149901. The next prime is 13149931. The reversal of 13149903 is 30994131.

It is not a de Polignac number, because 13149903 - 2¹ = 13149901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149901) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5773 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (1187550).

Almost surely, 2^13149903 is an apocalyptic number.

13149903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13149903 is a deficient number, since it is larger than the sum of its proper divisors (5850897).

13149903 is a wasteful number, since it uses less digits than its factorization.

13149903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 13149903 is about 3626.2794983288. The cubic root of 13149903 is about 236.0337917236.

The spelling of 13149903 in words is "thirteen million, one hundred forty-nine thousand, nine hundred three".