1318744469956 has 9 divisors (see below), whose sum is σ = 2307806841711. Its totient is φ = 659371086612.

The previous prime is 1318744469951. The next prime is 1318744469981. The reversal of 1318744469956 is 6599644478131.

The square root of 1318744469956 is 1148366.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1318744469891 and 1318744469900.

It is not an unprimeable number, because it can be changed into a prime (1318744469951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2009641 + ... + 2583823.

Almost surely, 2^{1318744469956} is an apocalyptic number.

1318744469956 is the 1148366-th square number.

It is an amenable number.

1318744469956 is a deficient number, since it is larger than the sum of its proper divisors (989062371755).

1318744469956 is an frugal number, since it uses more digits than its factorization.

1318744469956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148370 (or 574185 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 67.

The spelling of 1318744469956 in words is "one trillion, three hundred eighteen billion, seven hundred forty-four million, four hundred sixty-nine thousand, nine hundred fifty-six".