1316686240 has 48 divisors (see below), whose sum is σ = 3134466720. Its totient is φ = 522645760.

The previous prime is 1316686237. The next prime is 1316686249. The reversal of 1316686240 is 426866131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1316686240.

It is not an unprimeable number, because it can be changed into a prime (1316686249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10450 + ... + 52369.

It is an arithmetic number, because the mean of its divisors is an integer number (65301390).

Almost surely, 2^1316686240 is an apocalyptic number.

1316686240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316686240 is an abundant number, since it is smaller than the sum of its proper divisors (1817780480).

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

1316686240 is a wasteful number, since it uses less digits than its factorization.

1316686240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62965 (or 62957 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1316686240 is about 36286.1714706856. The cubic root of 1316686240 is about 1096.0425951798.

The spelling of 1316686240 in words is "one billion, three hundred sixteen million, six hundred eighty-six thousand, two hundred forty".