1427320379 has 2 divisors, whose sum is σ = 1427320380. Its totient is φ = 1427320378.

The previous prime is 1427320351. The next prime is 1427320397. The reversal of 1427320379 is 9730237241.

Together with next prime (1427320397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1427320379 - 2⁸ = 1427320123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1427320339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713660189 + 713660190.

It is an arithmetic number, because the mean of its divisors is an integer number (713660190).

Almost surely, 2^1427320379 is an apocalyptic number.

1427320379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427320379 is an equidigital number, since it uses as much as digits as its factorization.

1427320379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 1427320379 is about 37779.8938458011. The cubic root of 1427320379 is about 1125.9190196434.

The spelling of 1427320379 in words is "one billion, four hundred twenty-seven million, three hundred twenty thousand, three hundred seventy-nine".