1316621634 has 32 divisors (see below), whose sum is σ = 2726118720. Its totient is φ = 423417792.

The previous prime is 1316621633. The next prime is 1316621641. The reversal of 1316621634 is 4361266131.

It is a junction number, because it is equal to n+sod(n) for n = 1316621595 and 1316621604.

It is not an unprimeable number, because it can be changed into a prime (1316621633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350832 + ... + 354564.

It is an arithmetic number, because the mean of its divisors is an integer number (85191210).

Almost surely, 2^1316621634 is an apocalyptic number.

1316621634 is an abundant number, since it is smaller than the sum of its proper divisors (1409497086).

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

1316621634 is a wasteful number, since it uses less digits than its factorization.

1316621634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5794.

The product of its digits is 15552, while the sum is 33.

The square root of 1316621634 is about 36285.2812308242. The cubic root of 1316621634 is about 1096.0246683358.

Adding to 1316621634 its reverse (4361266131), we get a palindrome (5677887765).

The spelling of 1316621634 in words is "one billion, three hundred sixteen million, six hundred twenty-one thousand, six hundred thirty-four".