1918284838 has 8 divisors (see below), whose sum is σ = 2890103832. Its totient is φ = 954916896.

The previous prime is 1918284793. The next prime is 1918284857. The reversal of 1918284838 is 8384828191.

It is a happy number.

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, 2112195 + ... + 2113102.

It is an arithmetic number, because the mean of its divisors is an integer number (361262979).

Almost surely, 2^1918284838 is an apocalyptic number.

1918284838 is a deficient number, since it is larger than the sum of its proper divisors (971818994).

1918284838 is a wasteful number, since it uses less digits than its factorization.

1918284838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225526.

The product of its digits is 884736, while the sum is 52.

The square root of 1918284838 is about 43798.2287084763. The cubic root of 1918284838 is about 1242.5227944058.

The spelling of 1918284838 in words is "one billion, nine hundred eighteen million, two hundred eighty-four thousand, eight hundred thirty-eight".