1529947429 has 2 divisors, whose sum is σ = 1529947430. Its totient is φ = 1529947428.

The previous prime is 1529947423. The next prime is 1529947481. The reversal of 1529947429 is 9247499251.

It is an a-pointer prime, because the next prime (1529947481) can be obtained adding 1529947429 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1464822529 + 65124900 = 38273^2 + 8070^2 .

It is an emirp because it is prime and its reverse (9247499251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1529947429 - 2³ = 1529947421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1529947421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 764973714 + 764973715.

It is an arithmetic number, because the mean of its divisors is an integer number (764973715).

Almost surely, 2^1529947429 is an apocalyptic number.

It is an amenable number.

1529947429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1529947429 is an equidigital number, since it uses as much as digits as its factorization.

1529947429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 1529947429 is about 39114.5424235028. The cubic root of 1529947429 is about 1152.2821546869.

The spelling of 1529947429 in words is "one billion, five hundred twenty-nine million, nine hundred forty-seven thousand, four hundred twenty-nine".