1316143640 has 64 divisors (see below), whose sum is σ = 3387908160. Its totient is φ = 450777600.

The previous prime is 1316143639. The next prime is 1316143643. The reversal of 1316143640 is 463416131.

It is a super-2 number, since 2×1316143640² = 3464468162224899200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316143643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362474 + ... + 366086.

It is an arithmetic number, because the mean of its divisors is an integer number (52936065).

Almost surely, 2^1316143640 is an apocalyptic number.

1316143640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316143640 is an abundant number, since it is smaller than the sum of its proper divisors (2071764520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316143640 is a wasteful number, since it uses less digits than its factorization.

1316143640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932 (or 4928 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1316143640 is about 36278.6940228008. The cubic root of 1316143640 is about 1095.8920165515.

Adding to 1316143640 its reverse (463416131), we get a palindrome (1779559771).

The spelling of 1316143640 in words is "one billion, three hundred sixteen million, one hundred forty-three thousand, six hundred forty".