1309897629 has 16 divisors (see below), whose sum is σ = 1952955840. Its totient is φ = 867700080.

The previous prime is 1309897621. The next prime is 1309897649. The reversal of 1309897629 is 9267989031.

1309897629 is a `hidden beast` number, since 1 + 3 + 0 + 9 + 8 + 9 + 7 + 629 = 666.

It is not a de Polignac number, because 1309897629 - 2³ = 1309897621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309897621) 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 in 15 ways as a sum of consecutive naturals, for example, 150267 + ... + 158744.

It is an arithmetic number, because the mean of its divisors is an integer number (122059740).

Almost surely, 2^1309897629 is an apocalyptic number.

It is an amenable number.

1309897629 is a deficient number, since it is larger than the sum of its proper divisors (643058211).

1309897629 is a wasteful number, since it uses less digits than its factorization.

1309897629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309177 (or 309171 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 1309897629 is about 36192.5079125501. The cubic root of 1309897629 is about 1094.1556786544.

The spelling of 1309897629 in words is "one billion, three hundred nine million, eight hundred ninety-seven thousand, six hundred twenty-nine".