1383686645 has 8 divisors (see below), whose sum is σ = 1811371680. Its totient is φ = 1006317520.

The previous prime is 1383686569. The next prime is 1383686663. The reversal of 1383686645 is 5466863831.

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

It is not a de Polignac number, because 1383686645 - 2¹² = 1383682549 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1383686593 and 1383686602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12578915 + ... + 12579024.

It is an arithmetic number, because the mean of its divisors is an integer number (226421460).

Almost surely, 2^1383686645 is an apocalyptic number.

It is an amenable number.

1383686645 is a deficient number, since it is larger than the sum of its proper divisors (427685035).

1383686645 is a wasteful number, since it uses less digits than its factorization.

1383686645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25157955.

The product of its digits is 2488320, while the sum is 50.

The square root of 1383686645 is about 37197.9387197732. The cubic root of 1383686645 is about 1114.3268192117.

The spelling of 1383686645 in words is "one billion, three hundred eighty-three million, six hundred eighty-six thousand, six hundred forty-five".