2730970091 has 2 divisors, whose sum is σ = 2730970092. Its totient is φ = 2730970090.

The previous prime is 2730970087. The next prime is 2730970127. The reversal of 2730970091 is 1900790372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2730970091 - 2² = 2730970087 is a prime.

It is not a weakly prime, because it can be changed into another prime (2730970001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365485045 + 1365485046.

It is an arithmetic number, because the mean of its divisors is an integer number (1365485046).

Almost surely, 2^2730970091 is an apocalyptic number.

2730970091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2730970091 is an equidigital number, since it uses as much as digits as its factorization.

2730970091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 2730970091 is about 52258.6843596354. The cubic root of 2730970091 is about 1397.7805122798.

The spelling of 2730970091 in words is "two billion, seven hundred thirty million, nine hundred seventy thousand, ninety-one".