30919121930 has 16 divisors (see below), whose sum is σ = 57449723904. Its totient is φ = 11968692240.

The previous prime is 30919121917. The next prime is 30919121957. The reversal of 30919121930 is 3912191903.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49869242 + ... + 49869861.

It is an arithmetic number, because the mean of its divisors is an integer number (3590607744).

Almost surely, 2^30919121930 is an apocalyptic number.

30919121930 is a deficient number, since it is larger than the sum of its proper divisors (26530601974).

30919121930 is a wasteful number, since it uses less digits than its factorization.

30919121930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99739141.

The product of its (nonzero) digits is 13122, while the sum is 38.

The spelling of 30919121930 in words is "thirty billion, nine hundred nineteen million, one hundred twenty-one thousand, nine hundred thirty".