1150165220 has 48 divisors (see below), whose sum is σ = 2436134400. Its totient is φ = 456126720.

The previous prime is 1150165129. The next prime is 1150165241. The reversal of 1150165220 is 225610511.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2021096 + ... + 2021664.

It is an arithmetic number, because the mean of its divisors is an integer number (50752800).

Almost surely, 2^1150165220 is an apocalyptic number.

1150165220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1150165220 is an abundant number, since it is smaller than the sum of its proper divisors (1285969180).

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

1150165220 is a wasteful number, since it uses less digits than its factorization.

1150165220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1150165220 is about 33914.0858641362. The cubic root of 1150165220 is about 1047.7397244699.

Adding to 1150165220 its reverse (225610511), we get a palindrome (1375775731).

The spelling of 1150165220 in words is "one billion, one hundred fifty million, one hundred sixty-five thousand, two hundred twenty".