30519739028 has 12 divisors (see below), whose sum is σ = 53410939092. Its totient is φ = 15259470720.

The previous prime is 30519738989. The next prime is 30519739037. The reversal of 30519739028 is 82093791503.

It can be written as a sum of positive squares in 2 ways, for example, as 12627466384 + 17892272644 = 112372^2 + 133762^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132668 + ... + 280428.

It is an arithmetic number, because the mean of its divisors is an integer number (4450911591).

Almost surely, 2^30519739028 is an apocalyptic number.

It is an amenable number.

30519739028 is a deficient number, since it is larger than the sum of its proper divisors (22891200064).

30519739028 is a wasteful number, since it uses less digits than its factorization.

30519739028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199402 (or 199400 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 30519739028 in words is "thirty billion, five hundred nineteen million, seven hundred thirty-nine thousand, twenty-eight".