3161887646 has 8 divisors (see below), whose sum is σ = 4743279480. Its totient is φ = 1580794488.

The previous prime is 3161887639. The next prime is 3161887649. The reversal of 3161887646 is 6467881613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3161887594 and 3161887603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161887649) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 46001 + ... + 91868.

It is an arithmetic number, because the mean of its divisors is an integer number (592909935).

Almost surely, 2^3161887646 is an apocalyptic number.

3161887646 is a deficient number, since it is larger than the sum of its proper divisors (1581391834).

3161887646 is a wasteful number, since it uses less digits than its factorization.

3161887646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149338.

The product of its digits is 1161216, while the sum is 50.

The square root of 3161887646 is about 56230.6646412791. The cubic root of 3161887646 is about 1467.7389222942.

The spelling of 3161887646 in words is "three billion, one hundred sixty-one million, eight hundred eighty-seven thousand, six hundred forty-six".