1930111138 has 8 divisors (see below), whose sum is σ = 2927696940. Its totient is φ = 954212160.

The previous prime is 1930111109. The next prime is 1930111151. The reversal of 1930111138 is 8311110391.

It can be written as a sum of positive squares in 2 ways, for example, as 1485871209 + 444239929 = 38547^2 + 21077^2 .

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, 5421483 + ... + 5421838.

Almost surely, 2^1930111138 is an apocalyptic number.

1930111138 is a deficient number, since it is larger than the sum of its proper divisors (997585802).

1930111138 is a wasteful number, since it uses less digits than its factorization.

1930111138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843412.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1930111138 is about 43933.0301481698. The cubic root of 1930111138 is about 1245.0709653478.

The spelling of 1930111138 in words is "one billion, nine hundred thirty million, one hundred eleven thousand, one hundred thirty-eight".