1361771473 has 4 divisors (see below), whose sum is σ = 1408729140. Its totient is φ = 1314813808.

The previous prime is 1361771471. The next prime is 1361771497. The reversal of 1361771473 is 3741771631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 315701824 + 1046069649 = 17768^2 + 32343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361771473 - 2¹ = 1361771471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361771471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23478790 + ... + 23478847.

It is an arithmetic number, because the mean of its divisors is an integer number (352182285).

Almost surely, 2^1361771473 is an apocalyptic number.

It is an amenable number.

1361771473 is a deficient number, since it is larger than the sum of its proper divisors (46957667).

1361771473 is an equidigital number, since it uses as much as digits as its factorization.

1361771473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46957666.

The product of its digits is 74088, while the sum is 40.

The square root of 1361771473 is about 36902.1879161656. The cubic root of 1361771473 is about 1108.4124894541.

The spelling of 1361771473 in words is "one billion, three hundred sixty-one million, seven hundred seventy-one thousand, four hundred seventy-three".