30750208188 has 96 divisors (see below), whose sum is σ = 83277282816. Its totient is φ = 8649722112.

The previous prime is 30750208129. The next prime is 30750208219. The reversal of 30750208188 is 88180205703.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2035270 + ... + 2050322.

It is an arithmetic number, because the mean of its divisors is an integer number (867471696).

Almost surely, 2^30750208188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30750208188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41638641408).

30750208188 is an abundant number, since it is smaller than the sum of its proper divisors (52527074628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30750208188 is a wasteful number, since it uses less digits than its factorization.

30750208188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15443 (or 15441 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 30750208188 in words is "thirty billion, seven hundred fifty million, two hundred eight thousand, one hundred eighty-eight".