2561922379 has 8 divisors (see below), whose sum is σ = 2651294160. Its totient is φ = 2472619296.

The previous prime is 2561922353. The next prime is 2561922397. The reversal of 2561922379 is 9732291652.

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 2561922379 - 2¹¹ = 2561920331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561922179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65529 + ... + 97045.

It is an arithmetic number, because the mean of its divisors is an integer number (331411770).

Almost surely, 2^2561922379 is an apocalyptic number.

2561922379 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2561922379 is a deficient number, since it is larger than the sum of its proper divisors (89371781).

2561922379 is a wasteful number, since it uses less digits than its factorization.

2561922379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34349.

The product of its digits is 408240, while the sum is 46.

The square root of 2561922379 is about 50615.4361731676. The cubic root of 2561922379 is about 1368.3230906090.

The spelling of 2561922379 in words is "two billion, five hundred sixty-one million, nine hundred twenty-two thousand, three hundred seventy-nine".