1373206733 has 4 divisors (see below), whose sum is σ = 1399116348. Its totient is φ = 1347297120.

The previous prime is 1373206711. The next prime is 1373206777. The reversal of 1373206733 is 3376023731.

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 871312324 + 501894409 = 29518^2 + 22403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373206733 - 2⁸ = 1373206477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1373206693 and 1373206702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373206633) 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, 12954728 + ... + 12954833.

It is an arithmetic number, because the mean of its divisors is an integer number (349779087).

Almost surely, 2^1373206733 is an apocalyptic number.

It is an amenable number.

1373206733 is a deficient number, since it is larger than the sum of its proper divisors (25909615).

1373206733 is an equidigital number, since it uses as much as digits as its factorization.

1373206733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25909614.

The product of its (nonzero) digits is 47628, while the sum is 35.

The square root of 1373206733 is about 37056.8041390512. The cubic root of 1373206733 is about 1111.5064179933.

The spelling of 1373206733 in words is "one billion, three hundred seventy-three million, two hundred six thousand, seven hundred thirty-three".