1316605836 has 384 divisors, whose sum is σ = 4335206400. Its totient is φ = 301086720.

The previous prime is 1316605831. The next prime is 1316605837. The reversal of 1316605836 is 6385066131.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 1316605794 and 1316605803.

It is not an unprimeable number, because it can be changed into a prime (1316605831) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14793280 + ... + 14793368.

It is an arithmetic number, because the mean of its divisors is an integer number (11289600).

Almost surely, 2^1316605836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1316605836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167603200).

1316605836 is an abundant number, since it is smaller than the sum of its proper divisors (3018600564).

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

1316605836 is a wasteful number, since it uses less digits than its factorization.

1316605836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1316605836 is about 36285.0635385967. The cubic root of 1316605836 is about 1096.0202846247.

The spelling of 1316605836 in words is "one billion, three hundred sixteen million, six hundred five thousand, eight hundred thirty-six".