1018900038 has 16 divisors (see below), whose sum is σ = 2194554096. Its totient is φ = 313507680.

The previous prime is 1018900031. The next prime is 1018900067. The reversal of 1018900038 is 8300098101.

It is a super-3 number, since 3×1018900038³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1018899978 and 1018900014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018900031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6531333 + ... + 6531488.

It is an arithmetic number, because the mean of its divisors is an integer number (137159631).

Almost surely, 2^1018900038 is an apocalyptic number.

1018900038 is an abundant number, since it is smaller than the sum of its proper divisors (1175654058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1018900038 is a wasteful number, since it uses less digits than its factorization.

1018900038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13062839.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1018900038 is about 31920.2136271047. The cubic root of 1018900038 is about 1006.2607340753.

Adding to 1018900038 its reverse (8300098101), we get a palindrome (9318998139).

The spelling of 1018900038 in words is "one billion, eighteen million, nine hundred thousand, thirty-eight".