1630790269 has 2 divisors, whose sum is σ = 1630790270. Its totient is φ = 1630790268.

The previous prime is 1630790261. The next prime is 1630790299. The reversal of 1630790269 is 9620970361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099718244 + 531072025 = 33162^2 + 23045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630790269 - 2³ = 1630790261 is a prime.

It is a super-3 number, since 3×1630790269³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630790261) 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 as a sum of consecutive naturals, namely, 815395134 + 815395135.

It is an arithmetic number, because the mean of its divisors is an integer number (815395135).

Almost surely, 2^1630790269 is an apocalyptic number.

It is an amenable number.

1630790269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630790269 is an equidigital number, since it uses as much as digits as its factorization.

1630790269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 1630790269 is about 40383.0443255582. The cubic root of 1630790269 is about 1177.0620845035.

The spelling of 1630790269 in words is "one billion, six hundred thirty million, seven hundred ninety thousand, two hundred sixty-nine".