1601313636 has 192 divisors, whose sum is σ = 4381267968. Its totient is φ = 451325952.

The previous prime is 1601313629. The next prime is 1601313653. The reversal of 1601313636 is 6363131061.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 14965495 + ... + 14965601.

It is an arithmetic number, because the mean of its divisors is an integer number (22819104).

Almost surely, 2^1601313636 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 1601313636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2190633984).

1601313636 is an abundant number, since it is smaller than the sum of its proper divisors (2779954332).

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

1601313636 is a wasteful number, since it uses less digits than its factorization.

1601313636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 1601313636 is about 40016.4170809931. The cubic root of 1601313636 is about 1169.9270989715.

Adding to 1601313636 its reverse (6363131061), we get a palindrome (7964444697).

The spelling of 1601313636 in words is "one billion, six hundred one million, three hundred thirteen thousand, six hundred thirty-six".