9742749890 has 16 divisors (see below), whose sum is σ = 18459947520. Its totient is φ = 3691989360.

The previous prime is 9742749889. The next prime is 9742749893. The reversal of 9742749890 is 989472479.

It is not an unprimeable number, because it can be changed into a prime (9742749893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25638626 + ... + 25639005.

It is an arithmetic number, because the mean of its divisors is an integer number (1153746720).

Almost surely, 2^9742749890 is an apocalyptic number.

9742749890 is a deficient number, since it is larger than the sum of its proper divisors (8717197630).

9742749890 is a wasteful number, since it uses less digits than its factorization.

9742749890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51277657.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The square root of 9742749890 is about 98705.3691042184. The cubic root of 9742749890 is about 2135.7996839798.

The spelling of 9742749890 in words is "nine billion, seven hundred forty-two million, seven hundred forty-nine thousand, eight hundred ninety".