2561932371 has 4 divisors (see below), whose sum is σ = 3415909832. Its totient is φ = 1707954912.

The previous prime is 2561932369. The next prime is 2561932379. The reversal of 2561932371 is 1732391652.

It is a happy number.

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

It is not a de Polignac number, because 2561932371 - 2¹ = 2561932369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561932379) 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, 426988726 + ... + 426988731.

It is an arithmetic number, because the mean of its divisors is an integer number (853977458).

Almost surely, 2^2561932371 is an apocalyptic number.

2561932371 is a deficient number, since it is larger than the sum of its proper divisors (853977461).

2561932371 is an equidigital number, since it uses as much as digits as its factorization.

2561932371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853977460.

The product of its digits is 68040, while the sum is 39.

The square root of 2561932371 is about 50615.5348781380. The cubic root of 2561932371 is about 1368.3248695162.

The spelling of 2561932371 in words is "two billion, five hundred sixty-one million, nine hundred thirty-two thousand, three hundred seventy-one".