1383040620 has 144 divisors (see below), whose sum is σ = 4573007712. Its totient is φ = 336291840.

The previous prime is 1383040613. The next prime is 1383040643. The reversal of 1383040620 is 260403831.

It is a happy number.

1383040620 is a `hidden beast` number, since 1 + 3 + 8 + 30 + 4 + 0 + 620 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 190660 + ... + 197780.

It is an arithmetic number, because the mean of its divisors is an integer number (31756998).

Almost surely, 2^1383040620 is an apocalyptic number.

1383040620 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 1383040620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286503856).

1383040620 is an abundant number, since it is smaller than the sum of its proper divisors (3189967092).

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

1383040620 is a wasteful number, since it uses less digits than its factorization.

1383040620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7232 (or 7227 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1383040620 is about 37189.2540930845. The cubic root of 1383040620 is about 1114.1533707291.

The spelling of 1383040620 in words is "one billion, three hundred eighty-three million, forty thousand, six hundred twenty".