1380386877 has 4 divisors (see below), whose sum is σ = 1840515840. Its totient is φ = 920257916.

The previous prime is 1380386807. The next prime is 1380386911. The reversal of 1380386877 is 7786830831.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380386877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380386807) 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, 230064477 + ... + 230064482.

It is an arithmetic number, because the mean of its divisors is an integer number (460128960).

Almost surely, 2^1380386877 is an apocalyptic number.

It is an amenable number.

1380386877 is a deficient number, since it is larger than the sum of its proper divisors (460128963).

1380386877 is an equidigital number, since it uses as much as digits as its factorization.

1380386877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460128962.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 1380386877 is about 37153.5580664894. The cubic root of 1380386877 is about 1113.4403114621.

The spelling of 1380386877 in words is "one billion, three hundred eighty million, three hundred eighty-six thousand, eight hundred seventy-seven".