1940038018 has 8 divisors (see below), whose sum is σ = 2911523148. Its totient is φ = 969530304.

The previous prime is 1940037991. The next prime is 1940038033. The reversal of 1940038018 is 8108300491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1912925169 + 27112849 = 43737^2 + 5207^2 .

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

It is a super-2 number, since 2×1940038018² = 7527495022570736648, which contains 22 as substring.

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, 239371 + ... + 247342.

Almost surely, 2^1940038018 is an apocalyptic number.

1940038018 is a deficient number, since it is larger than the sum of its proper divisors (971485130).

1940038018 is a wasteful number, since it uses less digits than its factorization.

1940038018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488708.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1940038018 is about 44045.8626660893. The cubic root of 1940038018 is about 1247.2018514723.

The spelling of 1940038018 in words is "one billion, nine hundred forty million, thirty-eight thousand, eighteen".