8180001215 has 4 divisors (see below), whose sum is σ = 9816001464. Its totient is φ = 6544000968.

The previous prime is 8180001209. The next prime is 8180001233. The reversal of 8180001215 is 5121000818.

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

It is a cyclic number.

It is not a de Polignac number, because 8180001215 - 2²⁶ = 8112892351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818000117 + ... + 818000126.

It is an arithmetic number, because the mean of its divisors is an integer number (2454000366).

Almost surely, 2^8180001215 is an apocalyptic number.

8180001215 is a deficient number, since it is larger than the sum of its proper divisors (1636000249).

8180001215 is a wasteful number, since it uses less digits than its factorization.

8180001215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636000248.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 8180001215 is about 90443.3591536714. The cubic root of 8180001215 is about 2014.8889852575. Note that the first 3 decimals are identical.

The spelling of 8180001215 in words is "eight billion, one hundred eighty million, one thousand, two hundred fifteen".