1445681504 has 12 divisors (see below), whose sum is σ = 2846185524. Its totient is φ = 722840736.

The previous prime is 1445681473. The next prime is 1445681509. The reversal of 1445681504 is 4051865441.

It is a super-3 number, since 3×1445681504³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445681509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22588742 + ... + 22588805.

It is an arithmetic number, because the mean of its divisors is an integer number (237182127).

Almost surely, 2^1445681504 is an apocalyptic number.

It is an amenable number.

1445681504 is a deficient number, since it is larger than the sum of its proper divisors (1400504020).

1445681504 is an equidigital number, since it uses as much as digits as its factorization.

1445681504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45177557 (or 45177549 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 1445681504 is about 38022.1186153534. The cubic root of 1445681504 is about 1130.7264246060.

The spelling of 1445681504 in words is "one billion, four hundred forty-five million, six hundred eighty-one thousand, five hundred four".