18983026394 has 8 divisors (see below), whose sum is σ = 28941335508. Its totient is φ = 9335914560.

The previous prime is 18983026373. The next prime is 18983026429. The reversal of 18983026394 is 49362038981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12375450025 + 6607576369 = 111245^2 + 81287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77799167 + ... + 77799410.

Almost surely, 2^18983026394 is an apocalyptic number.

18983026394 is a deficient number, since it is larger than the sum of its proper divisors (9958309114).

18983026394 is a wasteful number, since it uses less digits than its factorization.

18983026394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155598640.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 18983026394 in words is "eighteen billion, nine hundred eighty-three million, twenty-six thousand, three hundred ninety-four".