18035988650 has 12 divisors (see below), whose sum is σ = 33546938982. Its totient is φ = 7214395440.

The previous prime is 18035988629. The next prime is 18035988667. The reversal of 18035988650 is 5688953081.

It can be written as a sum of positive squares in 3 ways, for example, as 13868124169 + 4167864481 = 117763^2 + 64559^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18035988592 and 18035988601.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180359837 + ... + 180359936.

Almost surely, 2^18035988650 is an apocalyptic number.

18035988650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18035988650 is a deficient number, since it is larger than the sum of its proper divisors (15510950332).

18035988650 is a wasteful number, since it uses less digits than its factorization.

18035988650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360719785 (or 360719780 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 18035988650 in words is "eighteen billion, thirty-five million, nine hundred eighty-eight thousand, six hundred fifty".