1361743673 has 8 divisors (see below), whose sum is σ = 1443915720. Its totient is φ = 1279801600.

The previous prime is 1361743637. The next prime is 1361743693. The reversal of 1361743673 is 3763471631.

It can be written as a sum of positive squares in 4 ways, for example, as 1104365824 + 257377849 = 33232^2 + 16043^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1361743673 - 2⁶ = 1361743609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361743673.

It is not an unprimeable number, because it can be changed into a prime (1361743613) 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, 45218 + ... + 69051.

It is an arithmetic number, because the mean of its divisors is an integer number (180489465).

Almost surely, 2^1361743673 is an apocalyptic number.

It is an amenable number.

1361743673 is a deficient number, since it is larger than the sum of its proper divisors (82172047).

1361743673 is a wasteful number, since it uses less digits than its factorization.

1361743673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114987.

The product of its digits is 190512, while the sum is 41.

The square root of 1361743673 is about 36901.8112428103. The cubic root of 1361743673 is about 1108.4049468089.

The spelling of 1361743673 in words is "one billion, three hundred sixty-one million, seven hundred forty-three thousand, six hundred seventy-three".