30799918091 has 2 divisors, whose sum is σ = 30799918092. Its totient is φ = 30799918090.

The previous prime is 30799918063. The next prime is 30799918109. The reversal of 30799918091 is 19081999703.

Together with next prime (30799918109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30799918091 - 2¹⁴ = 30799901707 is a prime.

It is not a weakly prime, because it can be changed into another prime (30799917091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15399959045 + 15399959046.

It is an arithmetic number, because the mean of its divisors is an integer number (15399959046).

Almost surely, 2^30799918091 is an apocalyptic number.

30799918091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30799918091 is an equidigital number, since it uses as much as digits as its factorization.

30799918091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 56.

The spelling of 30799918091 in words is "thirty billion, seven hundred ninety-nine million, nine hundred eighteen thousand, ninety-one".