185030975021 has 8 divisors (see below), whose sum is σ = 192872512800. Its totient is φ = 177286847920.

The previous prime is 185030974979. The next prime is 185030975047. The reversal of 185030975021 is 120579030581.

185030975021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185030975021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 185030975021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185030975071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24348791 + ... + 24356388.

It is an arithmetic number, because the mean of its divisors is an integer number (24109064100).

Almost surely, 2^185030975021 is an apocalyptic number.

It is an amenable number.

185030975021 is a deficient number, since it is larger than the sum of its proper divisors (7841537779).

185030975021 is a wasteful number, since it uses less digits than its factorization.

185030975021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48705339.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 185030975021 in words is "one hundred eighty-five billion, thirty million, nine hundred seventy-five thousand, twenty-one".