1317653668 has 6 divisors (see below), whose sum is σ = 2305893926. Its totient is φ = 658826832.

The previous prime is 1317653651. The next prime is 1317653669. The reversal of 1317653668 is 8663567131.

It can be written as a sum of positive squares in only one way, i.e., 1202563684 + 115089984 = 34678^2 + 10728^2 .

It is a super-2 number, since 2×1317653668² = 3472422377587708448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1317653669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164706705 + ... + 164706712.

Almost surely, 2^1317653668 is an apocalyptic number.

It is an amenable number.

1317653668 is a deficient number, since it is larger than the sum of its proper divisors (988240258).

1317653668 is a wasteful number, since it uses less digits than its factorization.

1317653668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329413421 (or 329413419 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 1317653668 is about 36299.4995557790. The cubic root of 1317653668 is about 1096.3109665593.

The spelling of 1317653668 in words is "one billion, three hundred seventeen million, six hundred fifty-three thousand, six hundred sixty-eight".