30854340491 has 4 divisors (see below), whose sum is σ = 33227751312. Its totient is φ = 28480929672.

The previous prime is 30854340437. The next prime is 30854340523. The reversal of 30854340491 is 19404345803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19404345803 = 59 ⋅328887217.

It is not a de Polignac number, because 30854340491 - 2¹⁸ = 30854078347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30854340421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186705391 + ... + 1186705416.

It is an arithmetic number, because the mean of its divisors is an integer number (8306937828).

Almost surely, 2^30854340491 is an apocalyptic number.

30854340491 is a deficient number, since it is larger than the sum of its proper divisors (2373410821).

30854340491 is a wasteful number, since it uses less digits than its factorization.

30854340491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373410820.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 30854340491 in words is "thirty billion, eight hundred fifty-four million, three hundred forty thousand, four hundred ninety-one".