9145323730 has 16 divisors (see below), whose sum is σ = 16462797120. Its totient is φ = 3657859632.

The previous prime is 9145323727. The next prime is 9145323749. The reversal of 9145323730 is 373235419.

It is a happy number.

It is a super-2 number, since 2×9145323730² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9145323730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163531 + ... + 212209.

It is an arithmetic number, because the mean of its divisors is an integer number (1028924820).

Almost surely, 2^9145323730 is an apocalyptic number.

9145323730 is a deficient number, since it is larger than the sum of its proper divisors (7317473390).

9145323730 is a wasteful number, since it uses less digits than its factorization.

9145323730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67473.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 9145323730 is about 95631.1859698498. The cubic root of 9145323730 is about 2091.2198589832.

The spelling of 9145323730 in words is "nine billion, one hundred forty-five million, three hundred twenty-three thousand, seven hundred thirty".