30291869988 has 36 divisors (see below), whose sum is σ = 76607074908. Its totient is φ = 10092548160.

The previous prime is 30291869953. The next prime is 30291870017. The reversal of 30291869988 is 88996819203.

30291869988 is a `hidden beast` number, since 302 + 91 + 86 + 99 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23605864164 + 6686005824 = 153642^2 + 81768^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119431 + ... + 273582.

It is an arithmetic number, because the mean of its divisors is an integer number (2127974303).

Almost surely, 2^30291869988 is an apocalyptic number.

It is an amenable number.

30291869988 is an abundant number, since it is smaller than the sum of its proper divisors (46315204920).

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

30291869988 is a wasteful number, since it uses less digits than its factorization.

30291869988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395164 (or 395159 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 30291869988 in words is "thirty billion, two hundred ninety-one million, eight hundred sixty-nine thousand, nine hundred eighty-eight".