1445953471 has 4 divisors (see below), whose sum is σ = 1460269944. Its totient is φ = 1431637000.

The previous prime is 1445953441. The next prime is 1445953493. The reversal of 1445953471 is 1743595441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1743595441 = 7 ⋅249085063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445953471 is a prime.

It is a super-3 number, since 3×1445953471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445953441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7158085 + ... + 7158286.

It is an arithmetic number, because the mean of its divisors is an integer number (365067486).

Almost surely, 2^1445953471 is an apocalyptic number.

1445953471 is a deficient number, since it is larger than the sum of its proper divisors (14316473).

1445953471 is a wasteful number, since it uses less digits than its factorization.

1445953471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316472.

The product of its digits is 302400, while the sum is 43.

The square root of 1445953471 is about 38025.6948785949. The cubic root of 1445953471 is about 1130.7973256518.

The spelling of 1445953471 in words is "one billion, four hundred forty-five million, nine hundred fifty-three thousand, four hundred seventy-one".