20018518370 has 32 divisors (see below), whose sum is σ = 37947571200. Its totient is φ = 7582415616.

The previous prime is 20018518361. The next prime is 20018518391. The reversal of 20018518370 is 7381581002.

It is a self number, because there is not a number n which added to its sum of digits gives 20018518370.

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, 401882 + ... + 448938.

It is an arithmetic number, because the mean of its divisors is an integer number (1185861600).

Almost surely, 2^20018518370 is an apocalyptic number.

20018518370 is a deficient number, since it is larger than the sum of its proper divisors (17929052830).

20018518370 is a wasteful number, since it uses less digits than its factorization.

20018518370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49322.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 20018518370 in words is "twenty billion, eighteen million, five hundred eighteen thousand, three hundred seventy".