1373659809 has 8 divisors (see below), whose sum is σ = 1849328832. Its totient is φ = 906882000.

The previous prime is 1373659723. The next prime is 1373659829. The reversal of 1373659809 is 9089563731.

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

It is not a de Polignac number, because 1373659809 - 2⁹ = 1373659297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1373659829) 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, 2222442 + ... + 2223059.

It is an arithmetic number, because the mean of its divisors is an integer number (231166104).

Almost surely, 2^1373659809 is an apocalyptic number.

It is an amenable number.

1373659809 is a deficient number, since it is larger than the sum of its proper divisors (475669023).

1373659809 is a wasteful number, since it uses less digits than its factorization.

1373659809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445607.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 1373659809 is about 37062.9168981612. The cubic root of 1373659809 is about 1111.6286480733.

The spelling of 1373659809 in words is "one billion, three hundred seventy-three million, six hundred fifty-nine thousand, eight hundred nine".