2192907891 has 8 divisors (see below), whose sum is σ = 2959104960. Its totient is φ = 1444324712.

The previous prime is 2192907887. The next prime is 2192907901. The reversal of 2192907891 is 1987092912.

2192907891 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2192907891 - 2² = 2192907887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2192907891.

It is not an unprimeable number, because it can be changed into a prime (2192907841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4403181 + ... + 4403678.

It is an arithmetic number, because the mean of its divisors is an integer number (369888120).

Almost surely, 2^2192907891 is an apocalyptic number.

2192907891 is a deficient number, since it is larger than the sum of its proper divisors (766197069).

2192907891 is an equidigital number, since it uses as much as digits as its factorization.

2192907891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8806945.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 2192907891 is about 46828.4944344787. The cubic root of 2192907891 is about 1299.1923762777.

The spelling of 2192907891 in words is "two billion, one hundred ninety-two million, nine hundred seven thousand, eight hundred ninety-one".