30985707018 has 32 divisors (see below), whose sum is σ = 70889495040. Its totient is φ = 8844931440.

The previous prime is 30985707007. The next prime is 30985707023. The reversal of 30985707018 is 81070758903.

It is a super-2 number, since 2×30985707018² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292288 + ... + 383931.

It is an arithmetic number, because the mean of its divisors is an integer number (2215296720).

Almost surely, 2^30985707018 is an apocalyptic number.

30985707018 is an abundant number, since it is smaller than the sum of its proper divisors (39903788022).

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

30985707018 is a wasteful number, since it uses less digits than its factorization.

30985707018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677322.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 30985707018 in words is "thirty billion, nine hundred eighty-five million, seven hundred seven thousand, eighteen".