1529489729 has 2 divisors, whose sum is σ = 1529489730. Its totient is φ = 1529489728.

The previous prime is 1529489723. The next prime is 1529489771. The reversal of 1529489729 is 9279849251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1525058704 + 4431025 = 39052^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1529489729 - 2²⁰ = 1528441153 is a prime.

It is a super-2 number, since 2×1529489729² = 4678677662232986882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1529489723) 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, 764744864 + 764744865.

It is an arithmetic number, because the mean of its divisors is an integer number (764744865).

Almost surely, 2^1529489729 is an apocalyptic number.

It is an amenable number.

1529489729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1529489729 is an equidigital number, since it uses as much as digits as its factorization.

1529489729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 56.

The square root of 1529489729 is about 39108.6912207504. The cubic root of 1529489729 is about 1152.1672374174.

The spelling of 1529489729 in words is "one billion, five hundred twenty-nine million, four hundred eighty-nine thousand, seven hundred twenty-nine".