18983954698 has 16 divisors (see below), whose sum is σ = 28743782760. Its totient is φ = 9402734016.

The previous prime is 18983954611. The next prime is 18983954701. The reversal of 18983954698 is 89645938981.

It can be written as a sum of positive squares in 4 ways, for example, as 5088967569 + 13894987129 = 71337^2 + 117877^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1387740 + ... + 1401352.

Almost surely, 2^18983954698 is an apocalyptic number.

18983954698 is a deficient number, since it is larger than the sum of its proper divisors (9759828062).

18983954698 is a wasteful number, since it uses less digits than its factorization.

18983954698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20121.

The product of its digits is 134369280, while the sum is 70.

The spelling of 18983954698 in words is "eighteen billion, nine hundred eighty-three million, nine hundred fifty-four thousand, six hundred ninety-eight".