12953618 has 4 divisors (see below), whose sum is σ = 19430430. Its totient is φ = 6476808.

The previous prime is 12953593. The next prime is 12953651. The reversal of 12953618 is 81635921.

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

It can be written as a sum of positive squares in only one way, i.e., 9467929 + 3485689 = 3077^2 + 1867^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238403 + ... + 3238406.

Almost surely, 2^12953618 is an apocalyptic number.

12953618 is a deficient number, since it is larger than the sum of its proper divisors (6476812).

12953618 is an equidigital number, since it uses as much as digits as its factorization.

12953618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476811.

The product of its digits is 12960, while the sum is 35.

The square root of 12953618 is about 3599.1135019613. The cubic root of 12953618 is about 234.8534955264.

It can be divided in two parts, 1295 and 3618, that added together give a cube (4913 = 17³).

The spelling of 12953618 in words is "twelve million, nine hundred fifty-three thousand, six hundred eighteen".