9942445537 has 4 divisors (see below), whose sum is σ = 9946620160. Its totient is φ = 9938270916.

The previous prime is 9942445517. The next prime is 9942445567. The reversal of 9942445537 is 7355442499.

9942445537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9942445537 is a prime.

It is a super-2 number, since 2×9942445537² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9942445507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083737 + ... + 2088502.

It is an arithmetic number, because the mean of its divisors is an integer number (2486655040).

Almost surely, 2^9942445537 is an apocalyptic number.

It is an amenable number.

9942445537 is a deficient number, since it is larger than the sum of its proper divisors (4174623).

9942445537 is a wasteful number, since it uses less digits than its factorization.

9942445537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174622.

The product of its digits is 5443200, while the sum is 52.

The square root of 9942445537 is about 99711.8124246069. The cubic root of 9942445537 is about 2150.2934906359.

The spelling of 9942445537 in words is "nine billion, nine hundred forty-two million, four hundred forty-five thousand, five hundred thirty-seven".