1365897013 has 8 divisors (see below), whose sum is σ = 1521689400. Its totient is φ = 1217350848.

The previous prime is 1365897007. The next prime is 1365897019. The reversal of 1365897013 is 3107985631.

It is an interprime number because it is at equal distance from previous prime (1365897007) and next prime (1365897019).

It can be written as a sum of positive squares in 4 ways, for example, as 200562244 + 1165334769 = 14162^2 + 34137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1365897013 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 (1365897019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811158 + ... + 1811911.

It is an arithmetic number, because the mean of its divisors is an integer number (190211175).

Almost surely, 2^1365897013 is an apocalyptic number.

1365897013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1365897013 is a deficient number, since it is larger than the sum of its proper divisors (155792387).

1365897013 is a wasteful number, since it uses less digits than its factorization.

1365897013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623111.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1365897013 is about 36958.0439552745. The cubic root of 1365897013 is about 1109.5306873512.

The spelling of 1365897013 in words is "one billion, three hundred sixty-five million, eight hundred ninety-seven thousand, thirteen".