8149253820 has 24 divisors (see below), whose sum is σ = 22817910864. Its totient is φ = 2173134336.

The previous prime is 8149253789. The next prime is 8149253839. The reversal of 8149253820 is 283529418.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67910389 + ... + 67910508.

It is an arithmetic number, because the mean of its divisors is an integer number (950746286).

Almost surely, 2^8149253820 is an apocalyptic number.

It is an amenable number.

8149253820 is an abundant number, since it is smaller than the sum of its proper divisors (14668657044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8149253820 is a wasteful number, since it uses less digits than its factorization.

8149253820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135820909 (or 135820907 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 8149253820 is about 90273.2176229473. The cubic root of 8149253820 is about 2012.3612605513.

The spelling of 8149253820 in words is "eight billion, one hundred forty-nine million, two hundred fifty-three thousand, eight hundred twenty".