1378319 has 2 divisors, whose sum is σ = 1378320. Its totient is φ = 1378318.

The previous prime is 1378301. The next prime is 1378337. The reversal of 1378319 is 9138731.

It is a balanced prime because it is at equal distance from previous prime (1378301) and next prime (1378337).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1378319 is a prime.

It is a super-2 number, since 2×1378319² = 3799526531522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689159 + 689160.

It is an arithmetic number, because the mean of its divisors is an integer number (689160).

2^1378319 is an apocalyptic number.

1378319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378319 is an equidigital number, since it uses as much as digits as its factorization.

1378319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1378319 is about 1174.0183133154. The cubic root of 1378319 is about 111.2884040286.

The spelling of 1378319 in words is "one million, three hundred seventy-eight thousand, three hundred nineteen".