1445665514 has 4 divisors (see below), whose sum is σ = 2168498274. Its totient is φ = 722832756.

The previous prime is 1445665513. The next prime is 1445665519. The reversal of 1445665514 is 4155665441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1113223225 + 332442289 = 33365^2 + 18233^2 .

It is not an unprimeable number, because it can be changed into a prime (1445665513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361416377 + ... + 361416380.

Almost surely, 2^1445665514 is an apocalyptic number.

1445665514 is a deficient number, since it is larger than the sum of its proper divisors (722832760).

1445665514 is an equidigital number, since it uses as much as digits as its factorization.

1445665514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722832759.

The product of its digits is 288000, while the sum is 41.

The square root of 1445665514 is about 38021.9083424281. The cubic root of 1445665514 is about 1130.7222557804.

The spelling of 1445665514 in words is "one billion, four hundred forty-five million, six hundred sixty-five thousand, five hundred fourteen".