1144665522 has 384 divisors, whose sum is σ = 3656959488. Its totient is φ = 248832000.

The previous prime is 1144665521. The next prime is 1144665527. The reversal of 1144665522 is 2255664411.

1144665522 is a `hidden beast` number, since 1 + 1 + 44 + 66 + 552 + 2 = 666.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1144665521) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11333272 + ... + 11333372.

It is an arithmetic number, because the mean of its divisors is an integer number (9523332).

Almost surely, 2^1144665522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1144665522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828479744).

1144665522 is an abundant number, since it is smaller than the sum of its proper divisors (2512293966).

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

1144665522 is a wasteful number, since it uses less digits than its factorization.

1144665522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 191 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1144665522 is about 33832.9059053461. The cubic root of 1144665522 is about 1046.0670775556.

It can be divided in two parts, 1144 and 665522, that added together give a palindrome (666666).

The spelling of 1144665522 in words is "one billion, one hundred forty-four million, six hundred sixty-five thousand, five hundred twenty-two".