1309242365 has 16 divisors (see below), whose sum is σ = 1588500480. Its totient is φ = 1035840960.

The previous prime is 1309242307. The next prime is 1309242397. The reversal of 1309242365 is 5632429031.

It is not a de Polignac number, because 1309242365 - 2²⁴ = 1292465149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207071 + ... + 213299.

It is an arithmetic number, because the mean of its divisors is an integer number (99281280).

Almost surely, 2^1309242365 is an apocalyptic number.

It is an amenable number.

1309242365 is a deficient number, since it is larger than the sum of its proper divisors (279258115).

1309242365 is a wasteful number, since it uses less digits than its factorization.

1309242365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1309242365 is about 36183.4542988919. The cubic root of 1309242365 is about 1093.9732011857.

The spelling of 1309242365 in words is "one billion, three hundred nine million, two hundred forty-two thousand, three hundred sixty-five".