2578231973 has 8 divisors (see below), whose sum is σ = 2626344000. Its totient is φ = 2530267168.

The previous prime is 2578231937. The next prime is 2578231993. The reversal of 2578231973 is 3791328752.

2578231973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2578231973 - 2²⁴ = 2561454757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578231933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136 + ... + 71817.

It is an arithmetic number, because the mean of its divisors is an integer number (328293000).

Almost surely, 2^2578231973 is an apocalyptic number.

It is an amenable number.

2578231973 is a deficient number, since it is larger than the sum of its proper divisors (48112027).

2578231973 is an equidigital number, since it uses as much as digits as its factorization.

2578231973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73611.

The product of its digits is 635040, while the sum is 47.

The square root of 2578231973 is about 50776.2934153331. The cubic root of 2578231973 is about 1371.2206027335.

The spelling of 2578231973 in words is "two billion, five hundred seventy-eight million, two hundred thirty-one thousand, nine hundred seventy-three".