1629763249 has 2 divisors, whose sum is σ = 1629763250. Its totient is φ = 1629763248.

The previous prime is 1629763153. The next prime is 1629763297. The reversal of 1629763249 is 9423679261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875272225 + 754491024 = 29585^2 + 27468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1629763249 - 2²⁷ = 1495545521 is a prime.

It is a super-2 number, since 2×1629763249² = 5312256495582072002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1629763649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814881624 + 814881625.

It is an arithmetic number, because the mean of its divisors is an integer number (814881625).

Almost surely, 2^1629763249 is an apocalyptic number.

It is an amenable number.

1629763249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1629763249 is an equidigital number, since it uses as much as digits as its factorization.

1629763249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 49.

The square root of 1629763249 is about 40370.3263425006. The cubic root of 1629763249 is about 1176.8149404895.

The spelling of 1629763249 in words is "one billion, six hundred twenty-nine million, seven hundred sixty-three thousand, two hundred forty-nine".