1318181132 has 12 divisors (see below), whose sum is σ = 2381230656. Its totient is φ = 637829520.

The previous prime is 1318181131. The next prime is 1318181141. The reversal of 1318181132 is 2311818131.

It is a junction number, because it is equal to n+sod(n) for n = 1318181095 and 1318181104.

It is not an unprimeable number, because it can be changed into a prime (1318181131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5315123 + ... + 5315370.

It is an arithmetic number, because the mean of its divisors is an integer number (198435888).

Almost surely, 2^1318181132 is an apocalyptic number.

It is an amenable number.

1318181132 is a deficient number, since it is larger than the sum of its proper divisors (1063049524).

1318181132 is a wasteful number, since it uses less digits than its factorization.

1318181132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630528 (or 10630526 counting only the distinct ones).

The product of its digits is 1152, while the sum is 29.

The square root of 1318181132 is about 36306.7642733417. The cubic root of 1318181132 is about 1096.4572334776.

Adding to 1318181132 its reverse (2311818131), we get a palindrome (3629999263).

The spelling of 1318181132 in words is "one billion, three hundred eighteen million, one hundred eighty-one thousand, one hundred thirty-two".