12937618 has 8 divisors (see below), whose sum is σ = 19772748. Its totient is φ = 6346704.

The previous prime is 12937601. The next prime is 12937621. The reversal of 12937618 is 81673921.

It can be written as a sum of positive squares in 2 ways, for example, as 12581209 + 356409 = 3547^2 + 597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 60921 + ... + 61132.

Almost surely, 2^12937618 is an apocalyptic number.

12937618 is a deficient number, since it is larger than the sum of its proper divisors (6835130).

12937618 is a wasteful number, since it uses less digits than its factorization.

12937618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122108.

The product of its digits is 18144, while the sum is 37.

The square root of 12937618 is about 3596.8900455810. The cubic root of 12937618 is about 234.7567605418.

It can be divided in two parts, 1293 and 7618, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 12937618 in words is "twelve million, nine hundred thirty-seven thousand, six hundred eighteen".