1445538996 has 72 divisors (see below), whose sum is σ = 4013100000. Its totient is φ = 435084480.

The previous prime is 1445538961. The next prime is 1445539001. The reversal of 1445538996 is 6998355441.

1445538996 is a `hidden beast` number, since 1 + 4 + 4 + 553 + 89 + 9 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 46755 + ... + 71253.

It is an arithmetic number, because the mean of its divisors is an integer number (55737500).

Almost surely, 2^1445538996 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 1445538996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2006550000).

1445538996 is an abundant number, since it is smaller than the sum of its proper divisors (2567561004).

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

1445538996 is a wasteful number, since it uses less digits than its factorization.

1445538996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24669 (or 24664 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 1445538996 is about 38020.2445547106. The cubic root of 1445538996 is about 1130.6892696135.

The spelling of 1445538996 in words is "one billion, four hundred forty-five million, five hundred thirty-eight thousand, nine hundred ninety-six".