9919042351 has 2 divisors, whose sum is σ = 9919042352. Its totient is φ = 9919042350.

The previous prime is 9919042339. The next prime is 9919042361. The reversal of 9919042351 is 1532409199.

It is a strong prime.

It is an emirp because it is prime and its reverse (1532409199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9919042351 - 2¹⁷ = 9918911279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9919042298 and 9919042307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9919042361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4959521175 + 4959521176.

It is an arithmetic number, because the mean of its divisors is an integer number (4959521176).

Almost surely, 2^9919042351 is an apocalyptic number.

9919042351 is a deficient number, since it is larger than the sum of its proper divisors (1).

9919042351 is an equidigital number, since it uses as much as digits as its factorization.

9919042351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 9919042351 is about 99594.3891542089. The cubic root of 9919042351 is about 2148.6049974262.

The spelling of 9919042351 in words is "nine billion, nine hundred nineteen million, forty-two thousand, three hundred fifty-one".