9919838942 has 8 divisors (see below), whose sum is σ = 16024355256. Its totient is φ = 4578387192.

The previous prime is 9919838939. The next prime is 9919839037. The reversal of 9919838942 is 2498389199.

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

It is a congruent number.

It is an unprimeable number.

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, 190766108 + ... + 190766159.

It is an arithmetic number, because the mean of its divisors is an integer number (2003044407).

Almost surely, 2^9919838942 is an apocalyptic number.

9919838942 is a deficient number, since it is larger than the sum of its proper divisors (6104516314).

9919838942 is a wasteful number, since it uses less digits than its factorization.

9919838942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381532282.

The product of its digits is 10077696, while the sum is 62.

The square root of 9919838942 is about 99598.3882500114. The cubic root of 9919838942 is about 2148.6625135158.

The spelling of 9919838942 in words is "nine billion, nine hundred nineteen million, eight hundred thirty-eight thousand, nine hundred forty-two".