3161278660 has 12 divisors (see below), whose sum is σ = 6638685228. Its totient is φ = 1264511456.

The previous prime is 3161278649. The next prime is 3161278669. The reversal of 3161278660 is 668721613.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 362445444 + 2798833216 = 19038^2 + 52904^2 .

It is not an unprimeable number, because it can be changed into a prime (3161278669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79031947 + ... + 79031986.

It is an arithmetic number, because the mean of its divisors is an integer number (553223769).

Almost surely, 2^3161278660 is an apocalyptic number.

It is an amenable number.

3161278660 is an abundant number, since it is smaller than the sum of its proper divisors (3477406568).

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

3161278660 is a wasteful number, since it uses less digits than its factorization.

3161278660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158063942 (or 158063940 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 3161278660 is about 56225.2493102521. The cubic root of 3161278660 is about 1467.6446864087.

The spelling of 3161278660 in words is "three billion, one hundred sixty-one million, two hundred seventy-eight thousand, six hundred sixty".