1380402004 has 24 divisors (see below), whose sum is σ = 2426592168. Its totient is φ = 687098880.

The previous prime is 1380401993. The next prime is 1380402019. The reversal of 1380402004 is 4002040831.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 1376410000 = 1998^2 + 37100^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235254 + ... + 1236370.

It is an arithmetic number, because the mean of its divisors is an integer number (101108007).

Almost surely, 2^1380402004 is an apocalyptic number.

It is an amenable number.

1380402004 is a deficient number, since it is larger than the sum of its proper divisors (1046190164).

1380402004 is a wasteful number, since it uses less digits than its factorization.

1380402004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1380402004 is about 37153.7616399740. The cubic root of 1380402004 is about 1113.4443786673. Note that the first 3 decimals are identical.

Adding to 1380402004 its reverse (4002040831), we get a palindrome (5382442835).

The spelling of 1380402004 in words is "one billion, three hundred eighty million, four hundred two thousand, four".