37518481573 has 4 divisors (see below), whose sum is σ = 37535909868. Its totient is φ = 37501053280.

The previous prime is 37518481571. The next prime is 37518481589.

37518481573 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22370287489 + 15148194084 = 149567^2 + 123078^2 .

It is a cyclic number.

It is not a de Polignac number, because 37518481573 - 2¹ = 37518481571 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 37518481573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37518481571) 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, 8710918 + ... + 8715223.

It is an arithmetic number, because the mean of its divisors is an integer number (9383977467).

Almost surely, 2^37518481573 is an apocalyptic number.

It is an amenable number.

37518481573 is a deficient number, since it is larger than the sum of its proper divisors (17428295).

37518481573 is a wasteful number, since it uses less digits than its factorization.

37518481573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17428294.

The product of its digits is 2822400, while the sum is 52.

The spelling of 37518481573 in words is "thirty-seven billion, five hundred eighteen million, four hundred eighty-one thousand, five hundred seventy-three".