1383654641 has 4 divisors (see below), whose sum is σ = 1431366900. Its totient is φ = 1335942384.

The previous prime is 1383654617. The next prime is 1383654661. The reversal of 1383654641 is 1464563831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1464563831 = 13381 ⋅109451.

It can be written as a sum of positive squares in 2 ways, for example, as 713103616 + 670551025 = 26704^2 + 25895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383654641 - 2⁶ = 1383654577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383654661) 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, 23856086 + ... + 23856143.

It is an arithmetic number, because the mean of its divisors is an integer number (357841725).

Almost surely, 2^1383654641 is an apocalyptic number.

It is an amenable number.

1383654641 is a deficient number, since it is larger than the sum of its proper divisors (47712259).

1383654641 is an equidigital number, since it uses as much as digits as its factorization.

1383654641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47712258.

The product of its digits is 207360, while the sum is 41.

The square root of 1383654641 is about 37197.5085321584. The cubic root of 1383654641 is about 1114.3182278661.

The spelling of 1383654641 in words is "one billion, three hundred eighty-three million, six hundred fifty-four thousand, six hundred forty-one".