3158946661 has 16 divisors (see below), whose sum is σ = 3552546816. Its totient is φ = 2787054336.

The previous prime is 3158946641. The next prime is 3158946689. The reversal of 3158946661 is 1666498513.

It is a cyclic number.

It is not a de Polignac number, because 3158946661 - 2⁵ = 3158946629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3158946601) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 494061 + ... + 500413.

It is an arithmetic number, because the mean of its divisors is an integer number (222034176).

Almost surely, 2^3158946661 is an apocalyptic number.

It is an amenable number.

3158946661 is a deficient number, since it is larger than the sum of its proper divisors (393600155).

3158946661 is a wasteful number, since it uses less digits than its factorization.

3158946661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052.

The product of its digits is 933120, while the sum is 49.

The square root of 3158946661 is about 56204.5074793828. The cubic root of 3158946661 is about 1467.2837156085.

The spelling of 3158946661 in words is "three billion, one hundred fifty-eight million, nine hundred forty-six thousand, six hundred sixty-one".