1149278000 has 80 divisors (see below), whose sum is σ = 2992787616. Its totient is φ = 424339200.

The previous prime is 1149277963. The next prime is 1149278029. The reversal of 1149278000 is 8729411.

It is a tau number, because it is divible by the number of its divisors (80).

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, 3899 + ... + 48101.

Almost surely, 2^1149278000 is an apocalyptic number.

1149278000 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 1149278000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496393808).

1149278000 is an abundant number, since it is smaller than the sum of its proper divisors (1843509616).

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

1149278000 is a wasteful number, since it uses less digits than its factorization.

1149278000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44239 (or 44223 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1149278000 is about 33901.0029350165. The cubic root of 1149278000 is about 1047.4702516600.

The spelling of 1149278000 in words is "one billion, one hundred forty-nine million, two hundred seventy-eight thousand".