1818909382 has 8 divisors (see below), whose sum is σ = 2766791952. Its totient is φ = 896645400.

The previous prime is 1818909361. The next prime is 1818909409. The reversal of 1818909382 is 2839098181.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404469 + ... + 6404752.

It is an arithmetic number, because the mean of its divisors is an integer number (345848994).

Almost surely, 2^1818909382 is an apocalyptic number.

1818909382 is a deficient number, since it is larger than the sum of its proper divisors (947882570).

1818909382 is a wasteful number, since it uses less digits than its factorization.

1818909382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12809294.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 1818909382 is about 42648.6738598048. The cubic root of 1818909382 is about 1220.6852242207.

The spelling of 1818909382 in words is "one billion, eight hundred eighteen million, nine hundred nine thousand, three hundred eighty-two".