1149942528 has 144 divisors (see below), whose sum is σ = 3886543360. Its totient is φ = 328541184.

The previous prime is 1149942503. The next prime is 1149942553. The reversal of 1149942528 is 8252499411.

It is a happy number.

1149942528 is a `hidden beast` number, since 114 + 9 + 9 + 4 + 2 + 528 = 666.

It is an interprime number because it is at equal distance from previous prime (1149942503) and next prime (1149942553).

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36501 + ... + 60267.

Almost surely, 2^1149942528 is an apocalyptic number.

1149942528 is a gapful number since it is divisible by the number (18) 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 1149942528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943271680).

1149942528 is an abundant number, since it is smaller than the sum of its proper divisors (2736600832).

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

1149942528 is an equidigital number, since it uses as much as digits as its factorization.

1149942528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23799 (or 23779 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1149942528 is about 33910.8025266286. The cubic root of 1149942528 is about 1047.6720998913.

The spelling of 1149942528 in words is "one billion, one hundred forty-nine million, nine hundred forty-two thousand, five hundred twenty-eight".