1984318378 has 8 divisors (see below), whose sum is σ = 3401688672. Its totient is φ = 850422156.

The previous prime is 1984318367. The next prime is 1984318379. The reversal of 1984318378 is 8738134891.

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

It is not an unprimeable number, because it can be changed into a prime (1984318379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70868500 + ... + 70868527.

It is an arithmetic number, because the mean of its divisors is an integer number (425211084).

Almost surely, 2^1984318378 is an apocalyptic number.

1984318378 is a deficient number, since it is larger than the sum of its proper divisors (1417370294).

1984318378 is a wasteful number, since it uses less digits than its factorization.

1984318378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141737036.

The product of its digits is 1161216, while the sum is 52.

The square root of 1984318378 is about 44545.6886578264. The cubic root of 1984318378 is about 1256.6194715073.

The spelling of 1984318378 in words is "one billion, nine hundred eighty-four million, three hundred eighteen thousand, three hundred seventy-eight".