1318493 has 8 divisors (see below), whose sum is σ = 1460640. Its totient is φ = 1180080.

The previous prime is 1318489. The next prime is 1318517. The reversal of 1318493 is 3948131.

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

It is not a de Polignac number, because 1318493 - 2² = 1318489 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318463) by changing a digit.

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, 158 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (182580).

2^1318493 is an apocalyptic number.

It is an amenable number.

1318493 is a deficient number, since it is larger than the sum of its proper divisors (142147).

1318493 is a wasteful number, since it uses less digits than its factorization.

1318493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its digits is 2592, while the sum is 29.

The square root of 1318493 is about 1148.2565044449. The cubic root of 1318493 is about 109.6543696800.

The spelling of 1318493 in words is "one million, three hundred eighteen thousand, four hundred ninety-three".