1518313 has 2 divisors, whose sum is σ = 1518314. Its totient is φ = 1518312.

The previous prime is 1518311. The next prime is 1518329. The reversal of 1518313 is 3138151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1459264 + 59049 = 1208^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 1518313 - 2¹ = 1518311 is a prime.

Together with 1518311, it forms a pair of twin primes.

It is equal to p₁₁₅₄₇₄ and since 1518313 and 115474 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1518311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759156 + 759157.

It is an arithmetic number, because the mean of its divisors is an integer number (759157).

2^1518313 is an apocalyptic number.

It is an amenable number.

1518313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1518313 is an equidigital number, since it uses as much as digits as its factorization.

1518313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 1518313 is about 1232.1984418104. The cubic root of 1518313 is about 114.9353890369.

It can be divided in two parts, 151 and 8313, that added together give a square (8464 = 92²).

The spelling of 1518313 in words is "one million, five hundred eighteen thousand, three hundred thirteen".