1601321300 has 18 divisors (see below), whose sum is σ = 3474867438. Its totient is φ = 640528480.

The previous prime is 1601321269. The next prime is 1601321303. The reversal of 1601321300 is 31231061.

It can be written as a sum of positive squares in 3 ways, for example, as 400560196 + 1200761104 = 20014^2 + 34652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601321303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8006507 + ... + 8006706.

It is an arithmetic number, because the mean of its divisors is an integer number (193048191).

Almost surely, 2^1601321300 is an apocalyptic number.

1601321300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601321300 is an abundant number, since it is smaller than the sum of its proper divisors (1873546138).

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

1601321300 is a wasteful number, since it uses less digits than its factorization.

1601321300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16013227 (or 16013220 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1601321300 is about 40016.5128415758. The cubic root of 1601321300 is about 1169.9289654197.

Adding to 1601321300 its reverse (31231061), we get a palindrome (1632552361).

The spelling of 1601321300 in words is "one billion, six hundred one million, three hundred twenty-one thousand, three hundred".