1145111000 has 128 divisors (see below), whose sum is σ = 3077568000. Its totient is φ = 394416000.

The previous prime is 1145110991. The next prime is 1145111029. The reversal of 1145111000 is 1115411.

It is a super-2 number, since 2×1145111000² = 2622558404642000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206261 + ... + 211739.

It is an arithmetic number, because the mean of its divisors is an integer number (24043500).

Almost surely, 2^1145111000 is an apocalyptic number.

1145111000 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 1145111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538784000).

1145111000 is an abundant number, since it is smaller than the sum of its proper divisors (1932457000).

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

1145111000 is a wasteful number, since it uses less digits than its factorization.

1145111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530 (or 5516 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 1145111000 is about 33839.4887668239. The cubic root of 1145111000 is about 1046.2027618586.

Adding to 1145111000 its reverse (1115411), we get a palindrome (1146226411).

It can be divided in two parts, 114511 and 1000, that added together give a palindrome (115511).

The spelling of 1145111000 in words is "one billion, one hundred forty-five million, one hundred eleven thousand".