9942530819 has 8 divisors (see below), whose sum is σ = 10724816592. Its totient is φ = 9162741600.

The previous prime is 9942530777. The next prime is 9942530833. The reversal of 9942530819 is 9180352499.

It is a happy number.

9942530819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9942530819 - 2¹² = 9942526723 is a prime.

It is a super-2 number, since 2×9942530819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9942530519) 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 7 ways as a sum of consecutive naturals, for example, 615857 + ... + 631794.

It is an arithmetic number, because the mean of its divisors is an integer number (1340602074).

Almost surely, 2^9942530819 is an apocalyptic number.

9942530819 is a deficient number, since it is larger than the sum of its proper divisors (782285773).

9942530819 is a wasteful number, since it uses less digits than its factorization.

9942530819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248277.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 9942530819 is about 99712.2400661022. The cubic root of 9942530819 is about 2150.2996387143.

The spelling of 9942530819 in words is "nine billion, nine hundred forty-two million, five hundred thirty thousand, eight hundred nineteen".