1630280741 has 2 divisors, whose sum is σ = 1630280742. Its totient is φ = 1630280740.

The previous prime is 1630280737. The next prime is 1630280747. The reversal of 1630280741 is 1470820361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592409025 + 37871716 = 39905^2 + 6154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630280741 - 2² = 1630280737 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 = 1630280698 and 1630280707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630280747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815140370 + 815140371.

It is an arithmetic number, because the mean of its divisors is an integer number (815140371).

Almost surely, 2^1630280741 is an apocalyptic number.

It is an amenable number.

1630280741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630280741 is an equidigital number, since it uses as much as digits as its factorization.

1630280741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1630280741 is about 40376.7351453780. The cubic root of 1630280741 is about 1176.9394837060.

The spelling of 1630280741 in words is "one billion, six hundred thirty million, two hundred eighty thousand, seven hundred forty-one".