13491118 has 4 divisors (see below), whose sum is σ = 20236680. Its totient is φ = 6745558.

The previous prime is 13491113. The next prime is 13491131. The reversal of 13491118 is 81119431.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3372778 + ... + 3372781.

It is an arithmetic number, because the mean of its divisors is an integer number (5059170).

Almost surely, 2^13491118 is an apocalyptic number.

13491118 is a deficient number, since it is larger than the sum of its proper divisors (6745562).

13491118 is an equidigital number, since it uses as much as digits as its factorization.

13491118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6745561.

The product of its digits is 864, while the sum is 28.

The square root of 13491118 is about 3673.0257281974. The cubic root of 13491118 is about 238.0579267235.

The spelling of 13491118 in words is "thirteen million, four hundred ninety-one thousand, one hundred eighteen".