13149518 has 16 divisors (see below), whose sum is σ = 20528640. Its totient is φ = 6310200.

The previous prime is 13149509. The next prime is 13149523. The reversal of 13149518 is 81594131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7313 + ... + 8931.

It is an arithmetic number, because the mean of its divisors is an integer number (1283040).

Almost surely, 2^13149518 is an apocalyptic number.

13149518 is a deficient number, since it is larger than the sum of its proper divisors (7379122).

13149518 is a wasteful number, since it uses less digits than its factorization.

13149518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783.

The product of its digits is 4320, while the sum is 32.

The square root of 13149518 is about 3626.2264132290. The cubic root of 13149518 is about 236.0314881858.

The spelling of 13149518 in words is "thirteen million, one hundred forty-nine thousand, five hundred eighteen".