1386180845 has 12 divisors (see below), whose sum is σ = 1934995644. Its totient is φ = 950523840.

The previous prime is 1386180821. The next prime is 1386180871. The reversal of 1386180845 is 5480816831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 476374276 + 909806569 = 21826^2 + 30163^2 .

It is not a de Polignac number, because 1386180845 - 2²⁰ = 1385132269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1386180796 and 1386180805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2828696 + ... + 2829185.

It is an arithmetic number, because the mean of its divisors is an integer number (161249637).

Almost surely, 2^1386180845 is an apocalyptic number.

It is an amenable number.

1386180845 is a deficient number, since it is larger than the sum of its proper divisors (548814799).

1386180845 is an equidigital number, since it uses as much as digits as its factorization.

1386180845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657900 (or 5657893 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 1386180845 is about 37231.4496763153. The cubic root of 1386180845 is about 1114.9959701437.

The spelling of 1386180845 in words is "one billion, three hundred eighty-six million, one hundred eighty thousand, eight hundred forty-five".