18032575937 has 6 divisors (see below), whose sum is σ = 19093901958. Its totient is φ = 16971315072.

The previous prime is 18032575921. The next prime is 18032575961. The reversal of 18032575937 is 73957523081.

It can be written as a sum of positive squares in 3 ways, for example, as 15436571536 + 2596004401 = 124244^2 + 50951^2 .

It is not a de Polignac number, because 18032575937 - 2⁴ = 18032575921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18032575837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 537389 + ... + 569957.

It is an arithmetic number, because the mean of its divisors is an integer number (3182316993).

Almost surely, 2^18032575937 is an apocalyptic number.

18032575937 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18032575937 is a deficient number, since it is larger than the sum of its proper divisors (1061326021).

18032575937 is an frugal number, since it uses more digits than its factorization.

18032575937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65155 (or 32586 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 18032575937 in words is "eighteen billion, thirty-two million, five hundred seventy-five thousand, nine hundred thirty-seven".