8172503493 has 64 divisors (see below), whose sum is σ = 13857951744. Its totient is φ = 4161024000.

The previous prime is 8172503453. The next prime is 8172503509. The reversal of 8172503493 is 3943052718.

It is not a de Polignac number, because 8172503493 - 2⁶ = 8172503429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172503453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2967205 + ... + 2969957.

It is an arithmetic number, because the mean of its divisors is an integer number (216530496).

Almost surely, 2^8172503493 is an apocalyptic number.

It is an amenable number.

8172503493 is a deficient number, since it is larger than the sum of its proper divisors (5685448251).

8172503493 is a wasteful number, since it uses less digits than its factorization.

8172503493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 8172503493 is about 90401.8998307005. The cubic root of 8172503493 is about 2014.2731868364.

The spelling of 8172503493 in words is "eight billion, one hundred seventy-two million, five hundred three thousand, four hundred ninety-three".