3046991661 has 20 divisors (see below), whose sum is σ = 5201919712. Its totient is φ = 1741137768.

The previous prime is 3046991657. The next prime is 3046991671. The reversal of 3046991661 is 1661996403.

It is not a de Polignac number, because 3046991661 - 2² = 3046991657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3046991611) 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 19 ways as a sum of consecutive naturals, for example, 2686375 + ... + 2687508.

Almost surely, 2^3046991661 is an apocalyptic number.

It is an amenable number.

3046991661 is a deficient number, since it is larger than the sum of its proper divisors (2154928051).

3046991661 is an equidigital number, since it uses as much as digits as its factorization.

3046991661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373902 (or 5373893 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 3046991661 is about 55199.5621450026. The cubic root of 3046991661 is about 1449.7410018580.

The spelling of 3046991661 in words is "three billion, forty-six million, nine hundred ninety-one thousand, six hundred sixty-one".