1423378013 has 2 divisors, whose sum is σ = 1423378014. Its totient is φ = 1423378012.

The previous prime is 1423378007. The next prime is 1423378037. The reversal of 1423378013 is 3108733241.

1423378013 = 26677² + 26678².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711715684 + 711662329 = 26678^2 + 26677^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423378013 - 2⁸ = 1423377757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423348013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711689006 + 711689007.

It is an arithmetic number, because the mean of its divisors is an integer number (711689007).

Almost surely, 2^1423378013 is an apocalyptic number.

1423378013 is the 26678-th centered square number.

It is an amenable number.

1423378013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423378013 is an equidigital number, since it uses as much as digits as its factorization.

1423378013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1423378013 is about 37727.6823168347. The cubic root of 1423378013 is about 1124.8814394892.

The spelling of 1423378013 in words is "one billion, four hundred twenty-three million, three hundred seventy-eight thousand, thirteen".