1321538050 has 48 divisors (see below), whose sum is σ = 2856870720. Its totient is φ = 445412160.

The previous prime is 1321538047. The next prime is 1321538059. The reversal of 1321538050 is 508351231.

It is not an unprimeable number, because it can be changed into a prime (1321538059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11349 + ... + 52648.

It is an arithmetic number, because the mean of its divisors is an integer number (59518140).

Almost surely, 2^1321538050 is an apocalyptic number.

1321538050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321538050 is an abundant number, since it is smaller than the sum of its proper divisors (1535332670).

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

1321538050 is a wasteful number, since it uses less digits than its factorization.

1321538050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64075 (or 64070 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1321538050 is about 36352.9648034380. The cubic root of 1321538050 is about 1097.3872010098.

Adding to 1321538050 its reverse (508351231), we get a palindrome (1829889281).

The spelling of 1321538050 in words is "one billion, three hundred twenty-one million, five hundred thirty-eight thousand, fifty".