8201520490 has 8 divisors (see below), whose sum is σ = 14762736900. Its totient is φ = 3280608192.

The previous prime is 8201520461. The next prime is 8201520491. The reversal of 8201520490 is 940251028.

It can be written as a sum of positive squares in 2 ways, for example, as 8150297841 + 51222649 = 90279^2 + 7157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8201520491) 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 3 ways as a sum of consecutive naturals, for example, 410076015 + ... + 410076034.

Almost surely, 2^8201520490 is an apocalyptic number.

8201520490 is a deficient number, since it is larger than the sum of its proper divisors (6561216410).

8201520490 is a wasteful number, since it uses less digits than its factorization.

8201520490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820152056.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 8201520490 is about 90562.2464937791. The cubic root of 8201520490 is about 2016.6543062634.

The spelling of 8201520490 in words is "eight billion, two hundred one million, five hundred twenty thousand, four hundred ninety".