9742749893 has 2 divisors, whose sum is σ = 9742749894. Its totient is φ = 9742749892.

The previous prime is 9742749889. The next prime is 9742749911. The reversal of 9742749893 is 3989472479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9443563684 + 299186209 = 97178^2 + 17297^2 .

It is a cyclic number.

It is not a de Polignac number, because 9742749893 - 2² = 9742749889 is a prime.

It is a super-2 number, since 2×9742749893² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9742749493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4871374946 + 4871374947.

It is an arithmetic number, because the mean of its divisors is an integer number (4871374947).

Almost surely, 2^9742749893 is an apocalyptic number.

It is an amenable number.

9742749893 is a deficient number, since it is larger than the sum of its proper divisors (1).

9742749893 is an equidigital number, since it uses as much as digits as its factorization.

9742749893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 62.

The square root of 9742749893 is about 98705.3691194152. The cubic root of 9742749893 is about 2135.7996841990.

The spelling of 9742749893 in words is "nine billion, seven hundred forty-two million, seven hundred forty-nine thousand, eight hundred ninety-three".