1361300605 has 12 divisors (see below), whose sum is σ = 1900264860. Its totient is φ = 933463104.

The previous prime is 1361300599. The next prime is 1361300617. The reversal of 1361300605 is 5060031631.

It can be written as a sum of positive squares in 2 ways, for example, as 883397284 + 477903321 = 29722^2 + 21861^2 .

It is not a de Polignac number, because 1361300605 - 2³ = 1361300597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1361300605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2777920 + ... + 2778409.

It is an arithmetic number, because the mean of its divisors is an integer number (158355405).

Almost surely, 2^1361300605 is an apocalyptic number.

It is an amenable number.

1361300605 is a deficient number, since it is larger than the sum of its proper divisors (538964255).

1361300605 is an equidigital number, since it uses as much as digits as its factorization.

1361300605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556348 (or 5556341 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1361300605 is about 36895.8074176457. The cubic root of 1361300605 is about 1108.2847205517.

The spelling of 1361300605 in words is "one billion, three hundred sixty-one million, three hundred thousand, six hundred five".