13375618 has 4 divisors (see below), whose sum is σ = 20063430. Its totient is φ = 6687808.

The previous prime is 13375613. The next prime is 13375631. The reversal of 13375618 is 81657331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81657331 = 7 ⋅11665333.

It can be written as a sum of positive squares in only one way, i.e., 9443329 + 3932289 = 3073^2 + 1983^2 .

It is not an unprimeable number, because it can be changed into a prime (13375613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3343903 + ... + 3343906.

Almost surely, 2^13375618 is an apocalyptic number.

13375618 is a deficient number, since it is larger than the sum of its proper divisors (6687812).

13375618 is an equidigital number, since it uses as much as digits as its factorization.

13375618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687811.

The product of its digits is 15120, while the sum is 34.

The square root of 13375618 is about 3657.2691998266. The cubic root of 13375618 is about 237.3766258573.

The spelling of 13375618 in words is "thirteen million, three hundred seventy-five thousand, six hundred eighteen".