1318253963 has 8 divisors (see below), whose sum is σ = 1419985728. Its totient is φ = 1216569024.

The previous prime is 1318253941. The next prime is 1318253971. The reversal of 1318253963 is 3693528131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1318253963 - 2²⁰ = 1317205387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318253963.

It is not an unprimeable number, because it can be changed into a prime (1318253063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65831 + ... + 83487.

It is an arithmetic number, because the mean of its divisors is an integer number (177498216).

Almost surely, 2^1318253963 is an apocalyptic number.

1318253963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1318253963 is a deficient number, since it is larger than the sum of its proper divisors (101731765).

1318253963 is a wasteful number, since it uses less digits than its factorization.

1318253963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23413.

The product of its digits is 116640, while the sum is 41.

The square root of 1318253963 is about 36307.7672544044. The cubic root of 1318253963 is about 1096.4774266069.

The spelling of 1318253963 in words is "one billion, three hundred eighteen million, two hundred fifty-three thousand, nine hundred sixty-three".