1318673 has 4 divisors (see below), whose sum is σ = 1396260. Its totient is φ = 1241088.

The previous prime is 1318663. The next prime is 1318697. The reversal of 1318673 is 3768131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3768131 = 47 ⋅80173.

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 494209 = 908^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318673 - 2⁶ = 1318609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38768 + ... + 38801.

It is an arithmetic number, because the mean of its divisors is an integer number (349065).

2^1318673 is an apocalyptic number.

It is an amenable number.

1318673 is a deficient number, since it is larger than the sum of its proper divisors (77587).

1318673 is an equidigital number, since it uses as much as digits as its factorization.

1318673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77586.

The product of its digits is 3024, while the sum is 29.

The square root of 1318673 is about 1148.3348814697. The cubic root of 1318673 is about 109.6593594394.

It can be divided in two parts, 13186 and 73, that multiplied together give a triangular number (962578 = T₁₃₈₇).

The spelling of 1318673 in words is "one million, three hundred eighteen thousand, six hundred seventy-three".