9180938018 has 18 divisors (see below), whose sum is σ = 16021455291. Its totient is φ = 3934281204.

The previous prime is 9180938017. The next prime is 9180938089. The reversal of 9180938018 is 8108390819.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4590469009 + 4590469009 = 67753^2 + 67753^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=67753.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9180938017) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 943703 + ... + 953381.

Almost surely, 2^9180938018 is an apocalyptic number.

9180938018 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

9180938018 is a deficient number, since it is larger than the sum of its proper divisors (6840517273).

9180938018 is an frugal number, since it uses more digits than its factorization.

9180938018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19374 (or 9688 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 47.

The square root of 9180938018 is about 95817.2114914643. The cubic root of 9180938018 is about 2093.9309289279.

The spelling of 9180938018 in words is "nine billion, one hundred eighty million, nine hundred thirty-eight thousand, eighteen".