1930111139 has 4 divisors (see below), whose sum is σ = 2105575800. Its totient is φ = 1754646480.

The previous prime is 1930111109. The next prime is 1930111151. The reversal of 1930111139 is 9311110391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1930111139 - 2²⁸ = 1661675683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1930111109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87732314 + ... + 87732335.

It is an arithmetic number, because the mean of its divisors is an integer number (526393950).

Almost surely, 2^1930111139 is an apocalyptic number.

1930111139 is a deficient number, since it is larger than the sum of its proper divisors (175464661).

1930111139 is a wasteful number, since it uses less digits than its factorization.

1930111139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175464660.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 1930111139 is about 43933.0301595508. The cubic root of 1930111139 is about 1245.0709655629.

The spelling of 1930111139 in words is "one billion, nine hundred thirty million, one hundred eleven thousand, one hundred thirty-nine".