186316447145 has 4 divisors (see below), whose sum is σ = 223579736580. Its totient is φ = 149053157712.

The previous prime is 186316447091. The next prime is 186316447147. The reversal of 186316447145 is 541744613681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541744613681 = 163 ⋅3323586587.

It can be written as a sum of positive squares in 2 ways, for example, as 120694402921 + 65622044224 = 347411^2 + 256168^2 .

It is a cyclic number.

It is not a de Polignac number, because 186316447145 - 2³⁶ = 117596970409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 186316447093 and 186316447102.

It is not an unprimeable number, because it can be changed into a prime (186316447147) 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, 18631644710 + ... + 18631644719.

It is an arithmetic number, because the mean of its divisors is an integer number (55894934145).

Almost surely, 2^186316447145 is an apocalyptic number.

It is an amenable number.

186316447145 is a deficient number, since it is larger than the sum of its proper divisors (37263289435).

186316447145 is an equidigital number, since it uses as much as digits as its factorization.

186316447145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37263289434.

The product of its digits is 1935360, while the sum is 50.

The spelling of 186316447145 in words is "one hundred eighty-six billion, three hundred sixteen million, four hundred forty-seven thousand, one hundred forty-five".