445174243919 has 4 divisors (see below), whose sum is σ = 445450923120. Its totient is φ = 444897564720.

The previous prime is 445174243903. The next prime is 445174243957. The reversal of 445174243919 is 919342471544.

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 445174243919 - 2⁴ = 445174243903 is a prime.

It is a super-2 number, since 2×445174243919² (a number of 24 digits) contains 22 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 (445174243819) 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, 138337187 + ... + 138340404.

It is an arithmetic number, because the mean of its divisors is an integer number (111362730780).

Almost surely, 2^445174243919 is an apocalyptic number.

445174243919 is a deficient number, since it is larger than the sum of its proper divisors (276679201).

445174243919 is a wasteful number, since it uses less digits than its factorization.

445174243919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276679200.

The product of its digits is 4354560, while the sum is 53.

The spelling of 445174243919 in words is "four hundred forty-five billion, one hundred seventy-four million, two hundred forty-three thousand, nine hundred nineteen".