8145405803 has 4 divisors (see below), whose sum is σ = 8146855920. Its totient is φ = 8143955688.

The previous prime is 8145405799. The next prime is 8145405841. The reversal of 8145405803 is 3085045418.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8145405803 - 2² = 8145405799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8175405803) 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, 716600 + ... + 727877.

It is an arithmetic number, because the mean of its divisors is an integer number (2036713980).

Almost surely, 2^8145405803 is an apocalyptic number.

8145405803 is a deficient number, since it is larger than the sum of its proper divisors (1450117).

8145405803 is a wasteful number, since it uses less digits than its factorization.

8145405803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450116.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 8145405803 is about 90251.9019356379. The cubic root of 8145405803 is about 2012.0444700142.

The spelling of 8145405803 in words is "eight billion, one hundred forty-five million, four hundred five thousand, eight hundred three".