1445723059 has 4 divisors (see below), whose sum is σ = 1577152440. Its totient is φ = 1314293680.

The previous prime is 1445723003. The next prime is 1445723093. The reversal of 1445723059 is 9503275441.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1445723059 - 2¹⁹ = 1445198771 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445723359) 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, 65714674 + ... + 65714695.

It is an arithmetic number, because the mean of its divisors is an integer number (394288110).

Almost surely, 2^1445723059 is an apocalyptic number.

1445723059 is a deficient number, since it is larger than the sum of its proper divisors (131429381).

1445723059 is a wasteful number, since it uses less digits than its factorization.

1445723059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131429380.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1445723059 is about 38022.6650696660. The cubic root of 1445723059 is about 1130.7372584553.

The spelling of 1445723059 in words is "one billion, four hundred forty-five million, seven hundred twenty-three thousand, fifty-nine".