1150018020 has 192 divisors, whose sum is σ = 3702988800. Its totient is φ = 296110080.

The previous prime is 1150018013. The next prime is 1150018021. The reversal of 1150018020 is 208100511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1150017984 and 1150018002.

It is not an unprimeable number, because it can be changed into a prime (1150018021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2811576 + ... + 2811984.

It is an arithmetic number, because the mean of its divisors is an integer number (19286400).

Almost surely, 2^1150018020 is an apocalyptic number.

1150018020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1150018020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1851494400).

1150018020 is an abundant number, since it is smaller than the sum of its proper divisors (2552970780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1150018020 is a wasteful number, since it uses less digits than its factorization.

1150018020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1150018020 is about 33911.9156049905. The cubic root of 1150018020 is about 1047.6950254230.

Adding to 1150018020 its reverse (208100511), we get a palindrome (1358118531).

The spelling of 1150018020 in words is "one billion, one hundred fifty million, eighteen thousand, twenty".