803149817 has 4 divisors (see below), whose sum is σ = 845420880. Its totient is φ = 760878756.

The previous prime is 803149801. The next prime is 803149847. The reversal of 803149817 is 718941308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 803149817 - 2⁴ = 803149801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (803149847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21135503 + ... + 21135540.

It is an arithmetic number, because the mean of its divisors is an integer number (211355220).

Almost surely, 2^803149817 is an apocalyptic number.

It is an amenable number.

803149817 is a deficient number, since it is larger than the sum of its proper divisors (42271063).

803149817 is a wasteful number, since it uses less digits than its factorization.

803149817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42271062.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 803149817 is about 28339.8979708820. The cubic root of 803149817 is about 929.5345175090.

The spelling of 803149817 in words is "eight hundred three million, one hundred forty-nine thousand, eight hundred seventeen".