2018809378 has 8 divisors (see below), whose sum is σ = 3028873680. Its totient is φ = 1009184820.

The previous prime is 2018809369. The next prime is 2018809409. The reversal of 2018809378 is 8739088102.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98208 + ... + 116971.

It is an arithmetic number, because the mean of its divisors is an integer number (378609210).

Almost surely, 2^2018809378 is an apocalyptic number.

2018809378 is a deficient number, since it is larger than the sum of its proper divisors (1010064302).

2018809378 is a wasteful number, since it uses less digits than its factorization.

2018809378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219872.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 2018809378 is about 44931.1626602295. The cubic root of 2018809378 is about 1263.8584540966.

The spelling of 2018809378 in words is "two billion, eighteen million, eight hundred nine thousand, three hundred seventy-eight".