2153972839 has 8 divisors (see below), whose sum is σ = 2254721760. Its totient is φ = 2053815456.

The previous prime is 2153972837. The next prime is 2153972861. The reversal of 2153972839 is 9382793512.

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

It is a cyclic number.

It is not a de Polignac number, because 2153972839 - 2¹ = 2153972837 is a prime.

It is a super-2 number, since 2×2153972839² = 9279197982299439842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2153972792 and 2153972801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153972831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140424 + ... + 155005.

It is an arithmetic number, because the mean of its divisors is an integer number (281840220).

Almost surely, 2^2153972839 is an apocalyptic number.

2153972839 is a deficient number, since it is larger than the sum of its proper divisors (100748921).

2153972839 is a wasteful number, since it uses less digits than its factorization.

2153972839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295769.

The product of its digits is 816480, while the sum is 49.

The square root of 2153972839 is about 46410.9129300426. The cubic root of 2153972839 is about 1291.4573676127.

The spelling of 2153972839 in words is "two billion, one hundred fifty-three million, nine hundred seventy-two thousand, eight hundred thirty-nine".