186145295557 has 12 divisors (see below), whose sum is σ = 201880188324. Its totient is φ = 171558266880.

The previous prime is 186145295549. The next prime is 186145295569. The reversal of 186145295557 is 755592541681.

It can be written as a sum of positive squares in 6 ways, for example, as 5595937636 + 180549357921 = 74806^2 + 424911^2 .

It is not a de Polignac number, because 186145295557 - 2³ = 186145295549 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 (186145295597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 750838 + ... + 967495.

It is an arithmetic number, because the mean of its divisors is an integer number (16823349027).

Almost surely, 2^186145295557 is an apocalyptic number.

It is an amenable number.

186145295557 is a deficient number, since it is larger than the sum of its proper divisors (15734892767).

186145295557 is a wasteful number, since it uses less digits than its factorization.

186145295557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719000 (or 1718987 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 58.

The spelling of 186145295557 in words is "one hundred eighty-six billion, one hundred forty-five million, two hundred ninety-five thousand, five hundred fifty-seven".