1379773819 has 2 divisors, whose sum is σ = 1379773820. Its totient is φ = 1379773818.

The previous prime is 1379773817. The next prime is 1379773849. The reversal of 1379773819 is 9183779731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1379773819 - 2¹ = 1379773817 is a prime.

It is a super-2 number, since 2×1379773819² = 3807551583195689522, which contains 22 as substring.

Together with 1379773817, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1379773819.

It is not a weakly prime, because it can be changed into another prime (1379773817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689886909 + 689886910.

It is an arithmetic number, because the mean of its divisors is an integer number (689886910).

Almost surely, 2^1379773819 is an apocalyptic number.

1379773819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379773819 is an equidigital number, since it uses as much as digits as its factorization.

1379773819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000376, while the sum is 55.

The square root of 1379773819 is about 37145.3068233391. The cubic root of 1379773819 is about 1113.2754531943.

It can be divided in two parts, 13797 and 73819, that added together give a square (87616 = 296²).

The spelling of 1379773819 in words is "one billion, three hundred seventy-nine million, seven hundred seventy-three thousand, eight hundred nineteen".