20182683478 has 4 divisors (see below), whose sum is σ = 30274025220. Its totient is φ = 10091341738.

The previous prime is 20182683457. The next prime is 20182683503. The reversal of 20182683478 is 87438628102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5045670868 + ... + 5045670871.

It is an arithmetic number, because the mean of its divisors is an integer number (7568506305).

Almost surely, 2^20182683478 is an apocalyptic number.

20182683478 is a deficient number, since it is larger than the sum of its proper divisors (10091341742).

20182683478 is a wasteful number, since it uses less digits than its factorization.

20182683478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091341741.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 20182683478 in words is "twenty billion, one hundred eighty-two million, six hundred eighty-three thousand, four hundred seventy-eight".