1379820973 has 2 divisors, whose sum is σ = 1379820974. Its totient is φ = 1379820972.

The previous prime is 1379820941. The next prime is 1379820979. The reversal of 1379820973 is 3790289731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081291689 + 298529284 = 32883^2 + 17278^2 .

It is a cyclic number.

It is not a de Polignac number, because 1379820973 - 2⁵ = 1379820941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1379820979) 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, 689910486 + 689910487.

It is an arithmetic number, because the mean of its divisors is an integer number (689910487).

Almost surely, 2^1379820973 is an apocalyptic number.

It is an amenable number.

1379820973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379820973 is an equidigital number, since it uses as much as digits as its factorization.

1379820973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 1379820973 is about 37145.9415414390. The cubic root of 1379820973 is about 1113.2881351745.

The spelling of 1379820973 in words is "one billion, three hundred seventy-nine million, eight hundred twenty thousand, nine hundred seventy-three".