8220923187 has 12 divisors (see below), whose sum is σ = 10986105816. Its totient is φ = 5468206080.

The previous prime is 8220923167. The next prime is 8220923203. The reversal of 8220923187 is 7813290228.

It is a happy number.

It is not a de Polignac number, because 8220923187 - 2¹⁰ = 8220922163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8220923167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619987 + ... + 633107.

It is an arithmetic number, because the mean of its divisors is an integer number (915508818).

Almost surely, 2^8220923187 is an apocalyptic number.

8220923187 is a deficient number, since it is larger than the sum of its proper divisors (2765182629).

8220923187 is an equidigital number, since it uses as much as digits as its factorization.

8220923187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14038 (or 13581 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8220923187 is about 90669.3067526161. The cubic root of 8220923187 is about 2018.2433497002.

The spelling of 8220923187 in words is "eight billion, two hundred twenty million, nine hundred twenty-three thousand, one hundred eighty-seven".