1352256309 has 16 divisors (see below), whose sum is σ = 2007475840. Its totient is φ = 899644320.

The previous prime is 1352256293. The next prime is 1352256329. The reversal of 1352256309 is 9036522531.

1352256309 is a `hidden beast` number, since 13 + 5 + 2 + 2 + 5 + 630 + 9 = 666.

It is not a de Polignac number, because 1352256309 - 2⁴ = 1352256293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352256329) 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, 38272 + ... + 64569.

It is an arithmetic number, because the mean of its divisors is an integer number (125467240).

Almost surely, 2^1352256309 is an apocalyptic number.

It is an amenable number.

1352256309 is a deficient number, since it is larger than the sum of its proper divisors (655219531).

1352256309 is a wasteful number, since it uses less digits than its factorization.

1352256309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103337 (or 103331 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 1352256309 is about 36773.0377994530. The cubic root of 1352256309 is about 1105.8248338011.

The spelling of 1352256309 in words is "one billion, three hundred fifty-two million, two hundred fifty-six thousand, three hundred nine".