2029931091 has 8 divisors (see below), whose sum is σ = 3007305360. Its totient is φ = 1353287376.

The previous prime is 2029931077. The next prime is 2029931129. The reversal of 2029931091 is 1901399202.

It is a happy number.

It is not a de Polignac number, because 2029931091 - 2⁹ = 2029930579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2029931011) 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, 37591290 + ... + 37591343.

It is an arithmetic number, because the mean of its divisors is an integer number (375913170).

Almost surely, 2^2029931091 is an apocalyptic number.

2029931091 is a deficient number, since it is larger than the sum of its proper divisors (977374269).

2029931091 is an equidigital number, since it uses as much as digits as its factorization.

2029931091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75182642 (or 75182636 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 2029931091 is about 45054.7565857369. The cubic root of 2029931091 is about 1266.1750897748.

The spelling of 2029931091 in words is "two billion, twenty-nine million, nine hundred thirty-one thousand, ninety-one".