1382181545 has 8 divisors (see below), whose sum is σ = 1699072200. Its totient is φ = 1078775680.

The previous prime is 1382181529. The next prime is 1382181569. The reversal of 1382181545 is 5451812831.

It can be written as a sum of positive squares in 4 ways, for example, as 142014889 + 1240166656 = 11917^2 + 35216^2 .

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

It is not a de Polignac number, because 1382181545 - 2⁴ = 1382181529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1382181499 and 1382181508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3370970 + ... + 3371379.

It is an arithmetic number, because the mean of its divisors is an integer number (212384025).

Almost surely, 2^1382181545 is an apocalyptic number.

It is an amenable number.

1382181545 is a deficient number, since it is larger than the sum of its proper divisors (316890655).

1382181545 is an equidigital number, since it uses as much as digits as its factorization.

1382181545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742395.

The product of its digits is 38400, while the sum is 38.

The square root of 1382181545 is about 37177.7022555187. The cubic root of 1382181545 is about 1113.9226376767.

The spelling of 1382181545 in words is "one billion, three hundred eighty-two million, one hundred eighty-one thousand, five hundred forty-five".