1131001018 has 8 divisors (see below), whose sum is σ = 1938858912. Its totient is φ = 484714716.

The previous prime is 1131001013. The next prime is 1131001019. The reversal of 1131001018 is 8101001311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1131000992 and 1131001010.

It is not an unprimeable number, because it can be changed into a prime (1131001013) 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, 40392880 + ... + 40392907.

It is an arithmetic number, because the mean of its divisors is an integer number (242357364).

Almost surely, 2^1131001018 is an apocalyptic number.

1131001018 is a deficient number, since it is larger than the sum of its proper divisors (807857894).

1131001018 is an equidigital number, since it uses as much as digits as its factorization.

1131001018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80785796.

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 1131001018 is about 33630.3585767384. The cubic root of 1131001018 is about 1041.8879101800.

Adding to 1131001018 its reverse (8101001311), we get a palindrome (9232002329).

The spelling of 1131001018 in words is "one billion, one hundred thirty-one million, one thousand, eighteen".