1379773849 has 2 divisors, whose sum is σ = 1379773850. Its totient is φ = 1379773848.

The previous prime is 1379773819. The next prime is 1379773859. The reversal of 1379773849 is 9483779731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252806025 + 126967824 = 35395^2 + 11268^2 .

It is a cyclic number.

It is not a de Polignac number, because 1379773849 - 2⁵ = 1379773817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1379773793 and 1379773802.

It is not a weakly prime, because it can be changed into another prime (1379773819) 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 as a sum of consecutive naturals, namely, 689886924 + 689886925.

It is an arithmetic number, because the mean of its divisors is an integer number (689886925).

Almost surely, 2^1379773849 is an apocalyptic number.

It is an amenable number.

1379773849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379773849 is an equidigital number, since it uses as much as digits as its factorization.

1379773849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 58.

The square root of 1379773849 is about 37145.3072271586. The cubic root of 1379773849 is about 1113.2754612629.

The spelling of 1379773849 in words is "one billion, three hundred seventy-nine million, seven hundred seventy-three thousand, eight hundred forty-nine".