1601515116 has 72 divisors (see below), whose sum is σ = 4296015360. Its totient is φ = 501957984.

The previous prime is 1601515103. The next prime is 1601515159. The reversal of 1601515116 is 6115151061.

1601515116 is a `hidden beast` number, since 1 + 601 + 5 + 1 + 51 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1601515116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32461 + ... + 65243.

It is an arithmetic number, because the mean of its divisors is an integer number (59666880).

Almost surely, 2^1601515116 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 1601515116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2148007680).

1601515116 is an abundant number, since it is smaller than the sum of its proper divisors (2694500244).

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

1601515116 is a wasteful number, since it uses less digits than its factorization.

1601515116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32875 (or 32870 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 1601515116 is about 40018.9344685737. The cubic root of 1601515116 is about 1169.9761643183.

Adding to 1601515116 its reverse (6115151061), we get a palindrome (7716666177).

The spelling of 1601515116 in words is "one billion, six hundred one million, five hundred fifteen thousand, one hundred sixteen".