1318212053 has 4 divisors (see below), whose sum is σ = 1318875468. Its totient is φ = 1317548640.

The previous prime is 1318212017. The next prime is 1318212067. The reversal of 1318212053 is 3502128131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3502128131 = 29 ⋅120763039.

It can be written as a sum of positive squares in 2 ways, for example, as 541865284 + 776346769 = 23278^2 + 27863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1318212053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318212953) 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, 328718 + ... + 332703.

It is an arithmetic number, because the mean of its divisors is an integer number (329718867).

Almost surely, 2^1318212053 is an apocalyptic number.

It is an amenable number.

1318212053 is a deficient number, since it is larger than the sum of its proper divisors (663415).

1318212053 is an equidigital number, since it uses as much as digits as its factorization.

1318212053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663414.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1318212053 is about 36307.1901005848. The cubic root of 1318212053 is about 1096.4658067276.

The spelling of 1318212053 in words is "one billion, three hundred eighteen million, two hundred twelve thousand, fifty-three".