1445575144 has 64 divisors (see below), whose sum is σ = 3128207040. Its totient is φ = 620313600.

The previous prime is 1445575141. The next prime is 1445575147. The reversal of 1445575144 is 4415755441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1445575141) and next prime (1445575147).

It is a junction number, because it is equal to n+sod(n) for n = 1445575097 and 1445575106.

It is not an unprimeable number, because it can be changed into a prime (1445575141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141819 + ... + 151669.

It is an arithmetic number, because the mean of its divisors is an integer number (48878235).

Almost surely, 2^1445575144 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 1445575144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564103520).

1445575144 is an abundant number, since it is smaller than the sum of its proper divisors (1682631896).

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

1445575144 is a wasteful number, since it uses less digits than its factorization.

1445575144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9970 (or 9966 counting only the distinct ones).

The product of its digits is 224000, while the sum is 40.

The square root of 1445575144 is about 38020.7199300592. The cubic root of 1445575144 is about 1130.6986944291.

The spelling of 1445575144 in words is "one billion, four hundred forty-five million, five hundred seventy-five thousand, one hundred forty-four".