1383684540 has 144 divisors (see below), whose sum is σ = 4662554400. Its totient is φ = 305346048.

The previous prime is 1383684521. The next prime is 1383684541. The reversal of 1383684540 is 454863831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1383684492 and 1383684501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383684541) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 77146 + ... + 93374.

It is an arithmetic number, because the mean of its divisors is an integer number (32378850).

Almost surely, 2^1383684540 is an apocalyptic number.

1383684540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383684540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331277200).

1383684540 is an abundant number, since it is smaller than the sum of its proper divisors (3278869860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1383684540 is a wasteful number, since it uses less digits than its factorization.

1383684540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16284 (or 16275 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 1383684540 is about 37197.9104251838. The cubic root of 1383684540 is about 1114.3262541370.

The spelling of 1383684540 in words is "one billion, three hundred eighty-three million, six hundred eighty-four thousand, five hundred forty".