1445061264 has 80 divisors (see below), whose sum is σ = 3942247680. Its totient is φ = 454861440.

The previous prime is 1445061253. The next prime is 1445061281. The reversal of 1445061264 is 4621605441.

It is a super-4 number, since 4×1445061264⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299479 + ... + 304265.

It is an arithmetic number, because the mean of its divisors is an integer number (49278096).

Almost surely, 2^1445061264 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 1445061264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1971123840).

1445061264 is an abundant number, since it is smaller than the sum of its proper divisors (2497186416).

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

1445061264 is a wasteful number, since it uses less digits than its factorization.

1445061264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148 (or 5142 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1445061264 is about 38013.9614352411. The cubic root of 1445061264 is about 1130.5646964809.

The spelling of 1445061264 in words is "one billion, four hundred forty-five million, sixty-one thousand, two hundred sixty-four".