2191546604 has 12 divisors (see below), whose sum is σ = 4130222544. Its totient is φ = 1011483024.

The previous prime is 2191546537. The next prime is 2191546631. The reversal of 2191546604 is 4066451912.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21072512 + ... + 21072615.

It is an arithmetic number, because the mean of its divisors is an integer number (344185212).

Almost surely, 2^2191546604 is an apocalyptic number.

It is an amenable number.

2191546604 is a deficient number, since it is larger than the sum of its proper divisors (1938675940).

2191546604 is a wasteful number, since it uses less digits than its factorization.

2191546604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42145144 (or 42145142 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2191546604 is about 46813.9573631625. The cubic root of 2191546604 is about 1298.9234882890.

The spelling of 2191546604 in words is "two billion, one hundred ninety-one million, five hundred forty-six thousand, six hundred four".