1380052879 has 4 divisors (see below), whose sum is σ = 1412147176. Its totient is φ = 1347958584.

The previous prime is 1380052871. The next prime is 1380052889. The reversal of 1380052879 is 9782500831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380052879 - 2³ = 1380052871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 32094253 = 1380052879 / (1 + 3 + 8 + 0 + 0 + 5 + 2 + 8 + 7 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380052871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16047084 + ... + 16047169.

It is an arithmetic number, because the mean of its divisors is an integer number (353036794).

Almost surely, 2^1380052879 is an apocalyptic number.

1380052879 is a deficient number, since it is larger than the sum of its proper divisors (32094297).

1380052879 is an equidigital number, since it uses as much as digits as its factorization.

1380052879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094296.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1380052879 is about 37149.0629626105. The cubic root of 1380052879 is about 1113.3505016556.

The spelling of 1380052879 in words is "one billion, three hundred eighty million, fifty-two thousand, eight hundred seventy-nine".