30855385790 has 32 divisors (see below), whose sum is σ = 56737701504. Its totient is φ = 12076081920.

The previous prime is 30855385783. The next prime is 30855385843. The reversal of 30855385790 is 9758355803.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2153450 + ... + 2167730.

It is an arithmetic number, because the mean of its divisors is an integer number (1773053172).

Almost surely, 2^30855385790 is an apocalyptic number.

30855385790 is a deficient number, since it is larger than the sum of its proper divisors (25882315714).

30855385790 is a wasteful number, since it uses less digits than its factorization.

30855385790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18932.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 30855385790 in words is "thirty billion, eight hundred fifty-five million, three hundred eighty-five thousand, seven hundred ninety".