2102404091 has 2 divisors, whose sum is σ = 2102404092. Its totient is φ = 2102404090.

The previous prime is 2102404067. The next prime is 2102404151. The reversal of 2102404091 is 1904042012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102404091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102404001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051202045 + 1051202046.

It is an arithmetic number, because the mean of its divisors is an integer number (1051202046).

Almost surely, 2^2102404091 is an apocalyptic number.

2102404091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102404091 is an equidigital number, since it uses as much as digits as its factorization.

2102404091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2102404091 is about 45851.9802298658. The cubic root of 2102404091 is about 1281.0676498735.

The spelling of 2102404091 in words is "two billion, one hundred two million, four hundred four thousand, ninety-one".