1375473809 has 8 divisors (see below), whose sum is σ = 1408167552. Its totient is φ = 1342812240.

The previous prime is 1375473739. The next prime is 1375473817. The reversal of 1375473809 is 9083745731.

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 1375473809 - 2²⁸ = 1107038353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375473839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93464 + ... + 107174.

It is an arithmetic number, because the mean of its divisors is an integer number (176020944).

Almost surely, 2^1375473809 is an apocalyptic number.

It is an amenable number.

1375473809 is a deficient number, since it is larger than the sum of its proper divisors (32693743).

1375473809 is a wasteful number, since it uses less digits than its factorization.

1375473809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16087.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 1375473809 is about 37087.3807244459. The cubic root of 1375473809 is about 1112.1177568932.

The spelling of 1375473809 in words is "one billion, three hundred seventy-five million, four hundred seventy-three thousand, eight hundred nine".