1818530378 has 8 divisors (see below), whose sum is σ = 3117480672. Its totient is φ = 779370156.

The previous prime is 1818530333. The next prime is 1818530411. The reversal of 1818530378 is 8730358181.

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, 64947500 + ... + 64947527.

It is an arithmetic number, because the mean of its divisors is an integer number (389685084).

Almost surely, 2^1818530378 is an apocalyptic number.

1818530378 is a deficient number, since it is larger than the sum of its proper divisors (1298950294).

1818530378 is a wasteful number, since it uses less digits than its factorization.

1818530378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129895036.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 1818530378 is about 42644.2303014136. The cubic root of 1818530378 is about 1220.6004340850.

The spelling of 1818530378 in words is "one billion, eight hundred eighteen million, five hundred thirty thousand, three hundred seventy-eight".