1380523040 has 48 divisors (see below), whose sum is σ = 3512374488. Its totient is φ = 509730816.

The previous prime is 1380523037. The next prime is 1380523073. The reversal of 1380523040 is 403250831.

It can be written as a sum of positive squares in 4 ways, for example, as 431143696 + 949379344 = 20764^2 + 30812^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 329777 + ... + 333936.

Almost surely, 2^1380523040 is an apocalyptic number.

1380523040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1380523040 is an abundant number, since it is smaller than the sum of its proper divisors (2131851448).

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

1380523040 is a wasteful number, since it uses less digits than its factorization.

1380523040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663741 (or 663733 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1380523040 is about 37155.3904568368. The cubic root of 1380523040 is about 1113.4769206164.

Adding to 1380523040 its reverse (403250831), we get a palindrome (1783773871).

The spelling of 1380523040 in words is "one billion, three hundred eighty million, five hundred twenty-three thousand, forty".