8528203981 has 4 divisors (see below), whose sum is σ = 9303495264. Its totient is φ = 7752912700.

The previous prime is 8528203967. The next prime is 8528203993. The reversal of 8528203981 is 1893028258.

8528203981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8528203981 - 2⁵ = 8528203949 is a prime.

It is a super-2 number, since 2×8528203981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8528203381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387645625 + ... + 387645646.

It is an arithmetic number, because the mean of its divisors is an integer number (2325873816).

Almost surely, 2^8528203981 is an apocalyptic number.

It is an amenable number.

8528203981 is a deficient number, since it is larger than the sum of its proper divisors (775291283).

8528203981 is a wasteful number, since it uses less digits than its factorization.

8528203981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775291282.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 8528203981 is about 92348.2754630535. The cubic root of 8528203981 is about 2043.0822927465.

The spelling of 8528203981 in words is "eight billion, five hundred twenty-eight million, two hundred three thousand, nine hundred eighty-one".