2290020091 has 2 divisors, whose sum is σ = 2290020092. Its totient is φ = 2290020090.

The previous prime is 2290020079. The next prime is 2290020097. The reversal of 2290020091 is 1900200922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2290020091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2290020097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145010045 + 1145010046.

It is an arithmetic number, because the mean of its divisors is an integer number (1145010046).

Almost surely, 2^2290020091 is an apocalyptic number.

2290020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290020091 is an equidigital number, since it uses as much as digits as its factorization.

2290020091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2290020091 is about 47854.1543755607. The cubic root of 2290020091 is about 1318.0941448728.

The spelling of 2290020091 in words is "two billion, two hundred ninety million, twenty thousand, ninety-one".