2092643991 has 10 divisors (see below), whose sum is σ = 3126048552. Its totient is φ = 1395095940.

The previous prime is 2092643981. The next prime is 2092644007. The reversal of 2092643991 is 1993462902.

It is a happy number.

2092643991 is a `hidden beast` number, since 209 + 2 + 6 + 439 + 9 + 1 = 666.

It is not a de Polignac number, because 2092643991 - 2⁷ = 2092643863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2092643921) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12917475 + ... + 12917636.

Almost surely, 2^2092643991 is an apocalyptic number.

2092643991 is a deficient number, since it is larger than the sum of its proper divisors (1033404561).

2092643991 is an equidigital number, since it uses as much as digits as its factorization.

2092643991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25835123 (or 25835114 counting only the distinct ones).

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

The square root of 2092643991 is about 45745.4259024878. The cubic root of 2092643991 is about 1279.0821852659.

The spelling of 2092643991 in words is "two billion, ninety-two million, six hundred forty-three thousand, nine hundred ninety-one".