1445261004 has 72 divisors (see below), whose sum is σ = 3995344080. Its totient is φ = 436867200.

The previous prime is 1445260981. The next prime is 1445261053. The reversal of 1445261004 is 4001625441.

1445261004 is a `hidden beast` number, since 1 + 4 + 45 + 2 + 610 + 0 + 4 = 666.

1445261004 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162382 + ... + 171050.

It is an arithmetic number, because the mean of its divisors is an integer number (55490890).

Almost surely, 2^1445261004 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 1445261004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1997672040).

1445261004 is an abundant number, since it is smaller than the sum of its proper divisors (2550083076).

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

1445261004 is a wasteful number, since it uses less digits than its factorization.

1445261004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9111 (or 9106 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1445261004 is about 38016.5885371110. The cubic root of 1445261004 is about 1130.6167839125.

Adding to 1445261004 its reverse (4001625441), we get a palindrome (5446886445).

It can be divided in two parts, 144526 and 1004, that added together give a triangular number (145530 = T₅₃₉).

The spelling of 1445261004 in words is "one billion, four hundred forty-five million, two hundred sixty-one thousand, four".