1152643020 has 24 divisors (see below), whose sum is σ = 3227400624. Its totient is φ = 307371456.

The previous prime is 1152643003. The next prime is 1152643021. The reversal of 1152643020 is 203462511.

It is not an unprimeable number, because it can be changed into a prime (1152643021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9605299 + ... + 9605418.

It is an arithmetic number, because the mean of its divisors is an integer number (134475026).

Almost surely, 2^1152643020 is an apocalyptic number.

1152643020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152643020 is an abundant number, since it is smaller than the sum of its proper divisors (2074757604).

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

1152643020 is a wasteful number, since it uses less digits than its factorization.

1152643020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19210729 (or 19210727 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1152643020 is about 33950.5967546964. The cubic root of 1152643020 is about 1048.4915664433.

The spelling of 1152643020 in words is "one billion, one hundred fifty-two million, six hundred forty-three thousand, twenty".