9742356919 has 2 divisors, whose sum is σ = 9742356920. Its totient is φ = 9742356918.

The previous prime is 9742356917. The next prime is 9742356929. The reversal of 9742356919 is 9196532479.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9196532479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9742356919 - 2¹ = 9742356917 is a prime.

It is a super-2 number, since 2×9742356919² (a number of 21 digits) contains 22 as substring.

Together with 9742356917, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9742356919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9742356917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4871178459 + 4871178460.

It is an arithmetic number, because the mean of its divisors is an integer number (4871178460).

Almost surely, 2^9742356919 is an apocalyptic number.

9742356919 is a deficient number, since it is larger than the sum of its proper divisors (1).

9742356919 is an equidigital number, since it uses as much as digits as its factorization.

9742356919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 55.

The square root of 9742356919 is about 98703.3784578826. The cubic root of 9742356919 is about 2135.7709679728.

The spelling of 9742356919 in words is "nine billion, seven hundred forty-two million, three hundred fifty-six thousand, nine hundred nineteen".