1444645548 has 72 divisors (see below), whose sum is σ = 3835130208. Its totient is φ = 457636608.

The previous prime is 1444645523. The next prime is 1444645549. The reversal of 1444645548 is 8455464441.

1444645548 is a `hidden beast` number, since 1 + 4 + 44 + 64 + 5 + 548 = 666.

It is not an unprimeable number, because it can be changed into a prime (1444645549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124440 + ... + 135552.

Almost surely, 2^1444645548 is an apocalyptic number.

1444645548 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 1444645548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1917565104).

1444645548 is an abundant number, since it is smaller than the sum of its proper divisors (2390484660).

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

1444645548 is a wasteful number, since it uses less digits than its factorization.

1444645548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11303 (or 11298 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 45.

The square root of 1444645548 is about 38008.4931035157. The cubic root of 1444645548 is about 1130.4562722635.

The spelling of 1444645548 in words is "one billion, four hundred forty-four million, six hundred forty-five thousand, five hundred forty-eight".