1315279129 has 16 divisors (see below), whose sum is σ = 1374912000. Its totient is φ = 1256808960.

The previous prime is 1315279117. The next prime is 1315279177. The reversal of 1315279129 is 9219725131.

It is a cyclic number.

It is not a de Polignac number, because 1315279129 - 2⁹ = 1315278617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1315279091 and 1315279100.

It is not an unprimeable number, because it can be changed into a prime (1315279529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1415337 + ... + 1416265.

It is an arithmetic number, because the mean of its divisors is an integer number (85932000).

Almost surely, 2^1315279129 is an apocalyptic number.

It is an amenable number.

1315279129 is a deficient number, since it is larger than the sum of its proper divisors (59632871).

1315279129 is a wasteful number, since it uses less digits than its factorization.

1315279129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its digits is 34020, while the sum is 40.

The square root of 1315279129 is about 36266.7772072458. Note that the first 3 decimals coincide. The cubic root of 1315279129 is about 1095.6520178700.

The spelling of 1315279129 in words is "one billion, three hundred fifteen million, two hundred seventy-nine thousand, one hundred twenty-nine".