1383308240 has 20 divisors (see below), whose sum is σ = 3216191844. Its totient is φ = 553323264.

The previous prime is 1383308203. The next prime is 1383308279. The reversal of 1383308240 is 428033831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 176996416 + 1206311824 = 13304^2 + 34732^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1383308197 and 1383308206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645597 + ... + 8645756.

Almost surely, 2^1383308240 is an apocalyptic number.

1383308240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383308240 is an abundant number, since it is smaller than the sum of its proper divisors (1832883604).

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

1383308240 is a wasteful number, since it uses less digits than its factorization.

1383308240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17291366 (or 17291360 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1383308240 is about 37192.8520014263. The cubic root of 1383308240 is about 1114.2252294272.

The spelling of 1383308240 in words is "one billion, three hundred eighty-three million, three hundred eight thousand, two hundred forty".