9021872519 has 4 divisors (see below), whose sum is σ = 9842042760. Its totient is φ = 8201702280.

The previous prime is 9021872513. The next prime is 9021872533. The reversal of 9021872519 is 9152781209.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9021872519 is a prime.

It is a super-2 number, since 2×9021872519² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9021872519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9021872513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410085104 + ... + 410085125.

It is an arithmetic number, because the mean of its divisors is an integer number (2460510690).

Almost surely, 2^9021872519 is an apocalyptic number.

9021872519 is a deficient number, since it is larger than the sum of its proper divisors (820170241).

9021872519 is a wasteful number, since it uses less digits than its factorization.

9021872519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820170240.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 9021872519 is about 94983.5381474074. The cubic root of 9021872519 is about 2081.7675217954.

The spelling of 9021872519 in words is "nine billion, twenty-one million, eight hundred seventy-two thousand, five hundred nineteen".