2021167139 has 8 divisors (see below), whose sum is σ = 2029934640. Its totient is φ = 2012414976.

The previous prime is 2021167129. The next prime is 2021167193. The reversal of 2021167139 is 9317611202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021167139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021167129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 315779 + ... + 322115.

It is an arithmetic number, because the mean of its divisors is an integer number (253741830).

Almost surely, 2^2021167139 is an apocalyptic number.

2021167139 is a deficient number, since it is larger than the sum of its proper divisors (8767501).

2021167139 is a wasteful number, since it uses less digits than its factorization.

2021167139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7669.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2021167139 is about 44957.3924844402. The cubic root of 2021167139 is about 1264.3502814239.

The spelling of 2021167139 in words is "two billion, twenty-one million, one hundred sixty-seven thousand, one hundred thirty-nine".