30518803892 has 12 divisors (see below), whose sum is σ = 55249558980. Its totient is φ = 14733215616.

The previous prime is 30518803873. The next prime is 30518803897. The reversal of 30518803892 is 29830881503.

It can be written as a sum of positive squares in 2 ways, for example, as 7328387236 + 23190416656 = 85606^2 + 152284^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30518803897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131546453 + ... + 131546684.

It is an arithmetic number, because the mean of its divisors is an integer number (4604129915).

Almost surely, 2^30518803892 is an apocalyptic number.

It is an amenable number.

30518803892 is a deficient number, since it is larger than the sum of its proper divisors (24730755088).

30518803892 is a wasteful number, since it uses less digits than its factorization.

30518803892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263093170 (or 263093168 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 30518803892 in words is "thirty billion, five hundred eighteen million, eight hundred three thousand, eight hundred ninety-two".