1145540000 has 240 divisors, whose sum is σ = 3174183936. Its totient is φ = 403200000.

The previous prime is 1145539999. The next prime is 1145540003. The reversal of 1145540000 is 455411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145540003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9019937 + ... + 9020063.

Almost surely, 2^1145540000 is an apocalyptic number.

1145540000 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 1145540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587091968).

1145540000 is an abundant number, since it is smaller than the sum of its proper divisors (2028643936).

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

1145540000 is a wasteful number, since it uses less digits than its factorization.

1145540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1145540000 is about 33845.8269214980. The cubic root of 1145540000 is about 1046.3333940123. Note that the first 4 decimals are identical.

Adding to 1145540000 its reverse (455411), we get a palindrome (1145995411).

It can be divided in two parts, 1145 and 540000, that added together give a palindrome (541145).

The spelling of 1145540000 in words is "one billion, one hundred forty-five million, five hundred forty thousand".