1445673523 has 16 divisors (see below), whose sum is σ = 1764884160. Its totient is φ = 1155926016.

The previous prime is 1445673511. The next prime is 1445673553. The reversal of 1445673523 is 3253765441.

It is a happy number.

It is not a de Polignac number, because 1445673523 - 2²¹ = 1443576371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445673553) 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, 40308 + ... + 67201.

It is an arithmetic number, because the mean of its divisors is an integer number (110305260).

Almost surely, 2^1445673523 is an apocalyptic number.

1445673523 is a deficient number, since it is larger than the sum of its proper divisors (319210637).

1445673523 is a wasteful number, since it uses less digits than its factorization.

1445673523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107646.

The product of its digits is 302400, while the sum is 40.

The square root of 1445673523 is about 38022.0136631399. The cubic root of 1445673523 is about 1130.7243438471.

The spelling of 1445673523 in words is "one billion, four hundred forty-five million, six hundred seventy-three thousand, five hundred twenty-three".