1147998000 has 160 divisors (see below), whose sum is σ = 3753277632. Its totient is φ = 301824000.

The previous prime is 1147997999. The next prime is 1147998023. The reversal of 1147998000 is 8997411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147998000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436690 + ... + 439310.

Almost surely, 2^1147998000 is an apocalyptic number.

1147998000 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 1147998000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1876638816).

1147998000 is an abundant number, since it is smaller than the sum of its proper divisors (2605279632).

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

1147998000 is a wasteful number, since it uses less digits than its factorization.

1147998000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720 (or 2704 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 1147998000 is about 33882.1191781152. The cubic root of 1147998000 is about 1047.0812364160.

The spelling of 1147998000 in words is "one billion, one hundred forty-seven million, nine hundred ninety-eight thousand".