1140998144 has 120 divisors (see below), whose sum is σ = 2686369728. Its totient is φ = 477757440.

The previous prime is 1140998123. The next prime is 1140998149. The reversal of 1140998144 is 4418990411.

It is a super-2 number, since 2×1140998144² = 2603753529222889472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1140998149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2342669 + ... + 2343155.

Almost surely, 2^1140998144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140998144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343184864).

1140998144 is an abundant number, since it is smaller than the sum of its proper divisors (1545371584).

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

1140998144 is an equidigital number, since it uses as much as digits as its factorization.

1140998144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1140998144 is about 33778.6640351569. The cubic root of 1140998144 is about 1044.9487224062.

The spelling of 1140998144 in words is "one billion, one hundred forty million, nine hundred ninety-eight thousand, one hundred forty-four".