2191949324 has 12 divisors (see below), whose sum is σ = 3882127704. Its totient is φ = 1082769984.

The previous prime is 2191949321. The next prime is 2191949393. The reversal of 2191949324 is 4239491912.

It is not an unprimeable number, because it can be changed into a prime (2191949321) 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, 3300797 + ... + 3301460.

It is an arithmetic number, because the mean of its divisors is an integer number (323510642).

Almost surely, 2^2191949324 is an apocalyptic number.

It is an amenable number.

2191949324 is a deficient number, since it is larger than the sum of its proper divisors (1690178380).

2191949324 is a wasteful number, since it uses less digits than its factorization.

2191949324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602344 (or 6602342 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 2191949324 is about 46818.2584468923. The cubic root of 2191949324 is about 1299.0030470852.

The spelling of 2191949324 in words is "two billion, one hundred ninety-one million, nine hundred forty-nine thousand, three hundred twenty-four".