8213609501 has 2 divisors, whose sum is σ = 8213609502. Its totient is φ = 8213609500.

The previous prime is 8213609473. The next prime is 8213609549. The reversal of 8213609501 is 1059063128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7926340900 + 287268601 = 89030^2 + 16949^2 .

It is a cyclic number.

It is not a de Polignac number, because 8213609501 - 2¹⁴ = 8213593117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8213603501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4106804750 + 4106804751.

It is an arithmetic number, because the mean of its divisors is an integer number (4106804751).

Almost surely, 2^8213609501 is an apocalyptic number.

It is an amenable number.

8213609501 is a deficient number, since it is larger than the sum of its proper divisors (1).

8213609501 is an equidigital number, since it uses as much as digits as its factorization.

8213609501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 8213609501 is about 90628.9661256267. The cubic root of 8213609501 is about 2017.6446668337.

The spelling of 8213609501 in words is "eight billion, two hundred thirteen million, six hundred nine thousand, five hundred one".