1378430479 has 2 divisors, whose sum is σ = 1378430480. Its totient is φ = 1378430478.

The previous prime is 1378430477. The next prime is 1378430561. The reversal of 1378430479 is 9740348731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378430479 - 2¹ = 1378430477 is a prime.

Together with 1378430477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378430477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689215239 + 689215240.

It is an arithmetic number, because the mean of its divisors is an integer number (689215240).

Almost surely, 2^1378430479 is an apocalyptic number.

1378430479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378430479 is an equidigital number, since it uses as much as digits as its factorization.

1378430479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 1378430479 is about 37127.2201895052. The cubic root of 1378430479 is about 1112.9140429814.

The spelling of 1378430479 in words is "one billion, three hundred seventy-eight million, four hundred thirty thousand, four hundred seventy-nine".