1384201540 has 24 divisors (see below), whose sum is σ = 3077813592. Its totient is φ = 521111040.

The previous prime is 1384201463. The next prime is 1384201589. The reversal of 1384201540 is 451024831.

It can be written as a sum of positive squares in 4 ways, for example, as 19342404 + 1364859136 = 4398^2 + 36944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1384201499 and 1384201508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035251 + ... + 2035930.

It is an arithmetic number, because the mean of its divisors is an integer number (128242233).

Almost surely, 2^1384201540 is an apocalyptic number.

1384201540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1384201540 is an abundant number, since it is smaller than the sum of its proper divisors (1693612052).

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

1384201540 is a wasteful number, since it uses less digits than its factorization.

1384201540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071207 (or 4071205 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1384201540 is about 37204.8590912531. The cubic root of 1384201540 is about 1114.4650225049.

The spelling of 1384201540 in words is "one billion, three hundred eighty-four million, two hundred one thousand, five hundred forty".