1380440577 has 4 divisors (see below), whose sum is σ = 1840587440. Its totient is φ = 920293716.

The previous prime is 1380440569. The next prime is 1380440591. The reversal of 1380440577 is 7750440831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1380440577 - 2³ = 1380440569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380440507) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 230073427 + ... + 230073432.

It is an arithmetic number, because the mean of its divisors is an integer number (460146860).

Almost surely, 2^1380440577 is an apocalyptic number.

It is an amenable number.

1380440577 is a deficient number, since it is larger than the sum of its proper divisors (460146863).

1380440577 is an equidigital number, since it uses as much as digits as its factorization.

1380440577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460146862.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 1380440577 is about 37154.2807358721. The cubic root of 1380440577 is about 1113.4547496775.

The spelling of 1380440577 in words is "one billion, three hundred eighty million, four hundred forty thousand, five hundred seventy-seven".