3201157915684 has 9 divisors (see below), whose sum is σ = 5602032614577. Its totient is φ = 1600577168664.

The previous prime is 3201157915673. The next prime is 3201157915693. The reversal of 3201157915684 is 4865197511023.

The square root of 3201157915684 is 1789178.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3098578637284 + 102579278400 = 1760278^2 + 320280^2 .

It is a super-2 number, since 2×3201157915684² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 3131062 + ... + 4025650.

It is a 1-persistent number, because it is pandigital, but 2⋅3201157915684 = 6402315831368 is not.

Almost surely, 2^{3201157915684} is an apocalyptic number.

3201157915684 is the 1789178-th square number.

It is an amenable number.

3201157915684 is a deficient number, since it is larger than the sum of its proper divisors (2400874698893).

3201157915684 is an frugal number, since it uses more digits than its factorization.

3201157915684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789182 (or 894591 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

It can be divided in two parts, 3201157 and 915684, that added together give a square (4116841 = 2029²).

The spelling of 3201157915684 in words is "three trillion, two hundred one billion, one hundred fifty-seven million, nine hundred fifteen thousand, six hundred eighty-four".