1373530705 has 4 divisors (see below), whose sum is σ = 1648236852. Its totient is φ = 1098824560.

The previous prime is 1373530699. The next prime is 1373530771. The reversal of 1373530705 is 5070353731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5070353731 = 113 ⋅44870387.

It can be written as a sum of positive squares in 2 ways, for example, as 1061195776 + 312334929 = 32576^2 + 17673^2 .

It is not a de Polignac number, because 1373530705 - 2¹⁹ = 1373006417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137353066 + ... + 137353075.

It is an arithmetic number, because the mean of its divisors is an integer number (412059213).

Almost surely, 2^1373530705 is an apocalyptic number.

It is an amenable number.

1373530705 is a deficient number, since it is larger than the sum of its proper divisors (274706147).

1373530705 is an equidigital number, since it uses as much as digits as its factorization.

1373530705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274706146.

The product of its (nonzero) digits is 33075, while the sum is 34.

The square root of 1373530705 is about 37061.1751702506. The cubic root of 1373530705 is about 1111.5938213521.

The spelling of 1373530705 in words is "one billion, three hundred seventy-three million, five hundred thirty thousand, seven hundred five".