1380487557 has 8 divisors (see below), whose sum is σ = 1841173984. Its totient is φ = 920063088.

The previous prime is 1380487529. The next prime is 1380487573. The reversal of 1380487557 is 7557840831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1380487557 - 2⁷ = 1380487429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380487657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52843 + ... + 74520.

It is an arithmetic number, because the mean of its divisors is an integer number (230146748).

Almost surely, 2^1380487557 is an apocalyptic number.

It is an amenable number.

1380487557 is a deficient number, since it is larger than the sum of its proper divisors (460686427).

1380487557 is a wasteful number, since it uses less digits than its factorization.

1380487557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130979.

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 1380487557 is about 37154.9129591229. The cubic root of 1380487557 is about 1113.4673807925.

The spelling of 1380487557 in words is "one billion, three hundred eighty million, four hundred eighty-seven thousand, five hundred fifty-seven".