3918973573 has 4 divisors (see below), whose sum is σ = 4125235360. Its totient is φ = 3712711788.

The previous prime is 3918973571. The next prime is 3918973577. The reversal of 3918973573 is 3753798193.

3918973573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3918973573 - 2¹ = 3918973571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918973571) 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, 103130865 + ... + 103130902.

It is an arithmetic number, because the mean of its divisors is an integer number (1031308840).

Almost surely, 2^3918973573 is an apocalyptic number.

It is an amenable number.

3918973573 is a deficient number, since it is larger than the sum of its proper divisors (206261787).

3918973573 is a wasteful number, since it uses less digits than its factorization.

3918973573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206261786.

The product of its digits is 4286520, while the sum is 55.

The square root of 3918973573 is about 62601.7058313909. The cubic root of 3918973573 is about 1576.6094002227.

The spelling of 3918973573 in words is "three billion, nine hundred eighteen million, nine hundred seventy-three thousand, five hundred seventy-three".