1632778541 has 2 divisors, whose sum is σ = 1632778542. Its totient is φ = 1632778540.

The previous prime is 1632778529. The next prime is 1632778627. The reversal of 1632778541 is 1458772361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1622881225 + 9897316 = 40285^2 + 3146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1632778541 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1632778492 and 1632778501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1632778501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816389270 + 816389271.

It is an arithmetic number, because the mean of its divisors is an integer number (816389271).

Almost surely, 2^1632778541 is an apocalyptic number.

It is an amenable number.

1632778541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1632778541 is an equidigital number, since it uses as much as digits as its factorization.

1632778541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 1632778541 is about 40407.6544852581. The cubic root of 1632778541 is about 1177.5402512675.

The spelling of 1632778541 in words is "one billion, six hundred thirty-two million, seven hundred seventy-eight thousand, five hundred forty-one".