1375816217 has 8 divisors (see below), whose sum is σ = 1405919424. Its totient is φ = 1346035248.

The previous prime is 1375816187. The next prime is 1375816223. The reversal of 1375816217 is 7126185731.

It is a happy number.

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 1375816217 - 2⁶ = 1375816153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375816297) 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, 71918 + ... + 89015.

It is an arithmetic number, because the mean of its divisors is an integer number (175739928).

Almost surely, 2^1375816217 is an apocalyptic number.

It is an amenable number.

1375816217 is a deficient number, since it is larger than the sum of its proper divisors (30103207).

1375816217 is a wasteful number, since it uses less digits than its factorization.

1375816217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161119.

The product of its digits is 70560, while the sum is 41.

The square root of 1375816217 is about 37091.9966704409. The cubic root of 1375816217 is about 1112.2100321078.

The spelling of 1375816217 in words is "one billion, three hundred seventy-five million, eight hundred sixteen thousand, two hundred seventeen".