8161915303 has 4 divisors (see below), whose sum is σ = 8168546848. Its totient is φ = 8155283760.

The previous prime is 8161915301. The next prime is 8161915357. The reversal of 8161915303 is 3035191618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3035191618 = 2 ⋅1517595809.

It is a cyclic number.

It is not a de Polignac number, because 8161915303 - 2¹ = 8161915301 is a prime.

It is a super-2 number, since 2×8161915303² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161915301) 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, 3313926 + ... + 3316387.

It is an arithmetic number, because the mean of its divisors is an integer number (2042136712).

Almost surely, 2^8161915303 is an apocalyptic number.

8161915303 is a deficient number, since it is larger than the sum of its proper divisors (6631545).

8161915303 is a wasteful number, since it uses less digits than its factorization.

8161915303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631544.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 8161915303 is about 90343.3190833722. The cubic root of 8161915303 is about 2013.4029221162.

The spelling of 8161915303 in words is "eight billion, one hundred sixty-one million, nine hundred fifteen thousand, three hundred three".