17992998386 has 40 divisors (see below), whose sum is σ = 29765325420. Its totient is φ = 8157432800.

The previous prime is 17992998329. The next prime is 17992998427. The reversal of 17992998386 is 68389929971.

It can be written as a sum of positive squares in 2 ways, for example, as 17877027025 + 115971361 = 133705^2 + 10769^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19120676 + ... + 19121616.

Almost surely, 2^17992998386 is an apocalyptic number.

17992998386 is a deficient number, since it is larger than the sum of its proper divisors (11772327034).

17992998386 is an frugal number, since it uses more digits than its factorization.

17992998386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1607 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 71.

The spelling of 17992998386 in words is "seventeen billion, nine hundred ninety-two million, nine hundred ninety-eight thousand, three hundred eighty-six".