1144920384 has 42 divisors (see below), whose sum is σ = 3281709210. Its totient is φ = 381639936.

The previous prime is 1144920353. The next prime is 1144920389. The reversal of 1144920384 is 4830294411.

It is a happy number.

1144920384 is a `hidden beast` number, since 1 + 1 + 449 + 203 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1124126784 + 20793600 = 33528^2 + 4560^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144920389) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 993279 + ... + 994430.

Almost surely, 2^1144920384 is an apocalyptic number.

It is an amenable number.

1144920384 is an abundant number, since it is smaller than the sum of its proper divisors (2136788826).

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

1144920384 is a wasteful number, since it uses less digits than its factorization.

1144920384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987727 (or 1987714 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1144920384 is about 33836.6721767966. The cubic root of 1144920384 is about 1046.1447080827.

The spelling of 1144920384 in words is "one billion, one hundred forty-four million, nine hundred twenty thousand, three hundred eighty-four".