1445315671 has 4 divisors (see below), whose sum is σ = 1472585832. Its totient is φ = 1418045512.

The previous prime is 1445315629. The next prime is 1445315681. The reversal of 1445315671 is 1765135441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1765135441 = 743 ⋅2375687.

It is a cyclic number.

It is not a de Polignac number, because 1445315671 - 2¹⁵ = 1445282903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445315671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445315681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13635001 + ... + 13635106.

It is an arithmetic number, because the mean of its divisors is an integer number (368146458).

Almost surely, 2^1445315671 is an apocalyptic number.

1445315671 is a deficient number, since it is larger than the sum of its proper divisors (27270161).

1445315671 is an equidigital number, since it uses as much as digits as its factorization.

1445315671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27270160.

The product of its digits is 50400, while the sum is 37.

The square root of 1445315671 is about 38017.3075190761. The cubic root of 1445315671 is about 1130.6310389267.

The spelling of 1445315671 in words is "one billion, four hundred forty-five million, three hundred fifteen thousand, six hundred seventy-one".