9919354742 has 16 divisors (see below), whose sum is σ = 16234538832. Its totient is φ = 4508001120.

The previous prime is 9919354717. The next prime is 9919354751. The reversal of 9919354742 is 2474539199.

It is a congruent number.

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, 98168 + ... + 171684.

It is an arithmetic number, because the mean of its divisors is an integer number (1014658677).

Almost surely, 2^9919354742 is an apocalyptic number.

9919354742 is a deficient number, since it is larger than the sum of its proper divisors (6315184090).

9919354742 is a wasteful number, since it uses less digits than its factorization.

9919354742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79663.

The product of its digits is 2449440, while the sum is 53.

The square root of 9919354742 is about 99595.9574581218. The cubic root of 9919354742 is about 2148.6275532937.

The spelling of 9919354742 in words is "nine billion, nine hundred nineteen million, three hundred fifty-four thousand, seven hundred forty-two".