188523530449 has 8 divisors (see below), whose sum is σ = 193129652520. Its totient is φ = 183917788800.

The previous prime is 188523530443. The next prime is 188523530473. The reversal of 188523530449 is 944035325881.

It can be written as a sum of positive squares in 4 ways, for example, as 2400314049 + 186123216400 = 48993^2 + 431420^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 188523530449 - 2⁹ = 188523529937 is a prime.

It is a super-2 number, since 2×188523530449² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188523530396 and 188523530405.

It is not an unprimeable number, because it can be changed into a prime (188523530443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084719 + ... + 1246459.

It is an arithmetic number, because the mean of its divisors is an integer number (24141206565).

Almost surely, 2^188523530449 is an apocalyptic number.

It is an amenable number.

188523530449 is a deficient number, since it is larger than the sum of its proper divisors (4606122071).

188523530449 is a wasteful number, since it uses less digits than its factorization.

188523530449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190211.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 188523530449 in words is "one hundred eighty-eight billion, five hundred twenty-three million, five hundred thirty thousand, four hundred forty-nine".