1145499000 has 256 divisors, whose sum is σ = 3742502400. Its totient is φ = 291456000.

The previous prime is 1145498989. The next prime is 1145499023. The reversal of 1145499000 is 9945411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8240931 + ... + 8241069.

It is an arithmetic number, because the mean of its divisors is an integer number (14619150).

Almost surely, 2^1145499000 is an apocalyptic number.

1145499000 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 1145499000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871251200).

1145499000 is an abundant number, since it is smaller than the sum of its proper divisors (2597003400).

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

1145499000 is a wasteful number, since it uses less digits than its factorization.

1145499000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1145499000 is about 33845.2212284098. The cubic root of 1145499000 is about 1046.3209107639.

The spelling of 1145499000 in words is "one billion, one hundred forty-five million, four hundred ninety-nine thousand".