1160021000 has 64 divisors (see below), whose sum is σ = 2723086080. Its totient is φ = 462532800.

The previous prime is 1160020997. The next prime is 1160021029. The reversal of 1160021000 is 1200611.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345329 + ... + 348671.

It is an arithmetic number, because the mean of its divisors is an integer number (42548220).

Almost surely, 2^1160021000 is an apocalyptic number.

1160021000 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 1160021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361543040).

1160021000 is an abundant number, since it is smaller than the sum of its proper divisors (1563065080).

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

1160021000 is a wasteful number, since it uses less digits than its factorization.

1160021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711 (or 3697 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1160021000 is about 34059.0810210728. The cubic root of 1160021000 is about 1050.7239149974.

Adding to 1160021000 its reverse (1200611), we get a palindrome (1161221611).

The spelling of 1160021000 in words is "one billion, one hundred sixty million, twenty-one thousand".