1361445513 has 16 divisors (see below), whose sum is σ = 1976692800. Its totient is φ = 830208960.

The previous prime is 1361445511. The next prime is 1361445521. The reversal of 1361445513 is 3155441631.

It is a happy number.

It is not a de Polignac number, because 1361445513 - 2¹ = 1361445511 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1361445511) 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, 410158 + ... + 413463.

It is an arithmetic number, because the mean of its divisors is an integer number (123543300).

Almost surely, 2^1361445513 is an apocalyptic number.

It is an amenable number.

1361445513 is a deficient number, since it is larger than the sum of its proper divisors (615247287).

1361445513 is a wasteful number, since it uses less digits than its factorization.

1361445513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823672.

The product of its digits is 21600, while the sum is 33.

The square root of 1361445513 is about 36897.7711115455. The cubic root of 1361445513 is about 1108.3240441279.

The spelling of 1361445513 in words is "one billion, three hundred sixty-one million, four hundred forty-five thousand, five hundred thirteen".