1829792561 has 4 divisors (see below), whose sum is σ = 1879246452. Its totient is φ = 1780338672.

The previous prime is 1829792521. The next prime is 1829792599. The reversal of 1829792561 is 1652979281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1535464225 + 294328336 = 39185^2 + 17156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1829792561 - 2²⁶ = 1762683697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1829792521) 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, 24726890 + ... + 24726963.

It is an arithmetic number, because the mean of its divisors is an integer number (469811613).

Almost surely, 2^1829792561 is an apocalyptic number.

It is an amenable number.

1829792561 is a deficient number, since it is larger than the sum of its proper divisors (49453891).

1829792561 is an equidigital number, since it uses as much as digits as its factorization.

1829792561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49453890.

The product of its digits is 544320, while the sum is 50.

The square root of 1829792561 is about 42776.0746329067. The cubic root of 1829792561 is about 1223.1149819455.

The spelling of 1829792561 in words is "one billion, eight hundred twenty-nine million, seven hundred ninety-two thousand, five hundred sixty-one".