9919902842 has 16 divisors (see below), whose sum is σ = 14964950400. Its totient is φ = 4931620848.

The previous prime is 9919902827. The next prime is 9919902919. The reversal of 9919902842 is 2482099199.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627803 + ... + 643409.

It is an arithmetic number, because the mean of its divisors is an integer number (935309400).

Almost surely, 2^9919902842 is an apocalyptic number.

9919902842 is a deficient number, since it is larger than the sum of its proper divisors (5045047558).

9919902842 is a wasteful number, since it uses less digits than its factorization.

9919902842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17405.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 9919902842 is about 99598.7090378184. The cubic root of 9919902842 is about 2148.6671271404.

The spelling of 9919902842 in words is "nine billion, nine hundred nineteen million, nine hundred two thousand, eight hundred forty-two".