17987906162 has 32 divisors (see below), whose sum is σ = 27894879792. Its totient is φ = 8693028864.

The previous prime is 17987906149. The next prime is 17987906177. The reversal of 17987906162 is 26160978971.

It is a Cunningham number, because it is equal to 134119²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1578552361 + 16409353801 = 39731^2 + 128099^2 .

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 17987906098 and 17987906107.

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, 9602858 + ... + 9604730.

Almost surely, 2^17987906162 is an apocalyptic number.

17987906162 is a deficient number, since it is larger than the sum of its proper divisors (9906973630).

17987906162 is a wasteful number, since it uses less digits than its factorization.

17987906162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 17987906162 in words is "seventeen billion, nine hundred eighty-seven million, nine hundred six thousand, one hundred sixty-two".