18070790312 has 8 divisors (see below), whose sum is σ = 33882731850. Its totient is φ = 9035395152.

The previous prime is 18070790281. The next prime is 18070790317. The reversal of 18070790312 is 21309707081.

It can be written as a sum of positive squares in only one way, i.e., 16443958756 + 1626831556 = 128234^2 + 40334^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18070790317) by changing a digit.

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 as a sum of consecutive naturals, namely, 1129424387 + ... + 1129424402.

Almost surely, 2^18070790312 is an apocalyptic number.

It is an amenable number.

18070790312 is a deficient number, since it is larger than the sum of its proper divisors (15811941538).

18070790312 is a wasteful number, since it uses less digits than its factorization.

18070790312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258848795 (or 2258848791 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 18070790312 in words is "eighteen billion, seventy million, seven hundred ninety thousand, three hundred twelve".