8161310903 has 4 divisors (see below), whose sum is σ = 8165436840. Its totient is φ = 8157184968.

The previous prime is 8161310897. The next prime is 8161310909. The reversal of 8161310903 is 3090131618.

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

It is an interprime number because it is at equal distance from previous prime (8161310897) and next prime (8161310909).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8161310903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8161310903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161310909) 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, 2060000 + ... + 2063957.

It is an arithmetic number, because the mean of its divisors is an integer number (2041359210).

Almost surely, 2^8161310903 is an apocalyptic number.

8161310903 is a deficient number, since it is larger than the sum of its proper divisors (4125937).

8161310903 is a wasteful number, since it uses less digits than its factorization.

8161310903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125936.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 8161310903 is about 90339.9740037598. The cubic root of 8161310903 is about 2013.3532225575.

The spelling of 8161310903 in words is "eight billion, one hundred sixty-one million, three hundred ten thousand, nine hundred three".