1373537709 has 16 divisors (see below), whose sum is σ = 2036831040. Its totient is φ = 914809680.

The previous prime is 1373537699. The next prime is 1373537723. The reversal of 1373537709 is 9077353731.

It is not a de Polignac number, because 1373537709 - 2¹³ = 1373529517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373537779) 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 15 ways as a sum of consecutive naturals, for example, 4674 + ... + 52620.

It is an arithmetic number, because the mean of its divisors is an integer number (127301940).

Almost surely, 2^1373537709 is an apocalyptic number.

It is an amenable number.

1373537709 is a deficient number, since it is larger than the sum of its proper divisors (663293331).

1373537709 is a wasteful number, since it uses less digits than its factorization.

1373537709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49017 (or 49011 counting only the distinct ones).

The product of its (nonzero) digits is 416745, while the sum is 45.

The square root of 1373537709 is about 37061.2696625466. The cubic root of 1373537709 is about 1111.5957107869.

The spelling of 1373537709 in words is "one billion, three hundred seventy-three million, five hundred thirty-seven thousand, seven hundred nine".