1378822373 has 2 divisors, whose sum is σ = 1378822374. Its totient is φ = 1378822372.

The previous prime is 1378822337. The next prime is 1378822387. The reversal of 1378822373 is 3732288731.

It is a happy number.

Together with previous prime (1378822337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 890544964 + 488277409 = 29842^2 + 22097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1378822373 - 2¹⁸ = 1378560229 is a prime.

It is a super-2 number, since 2×1378822373² = 3802302272570702258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378822073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689411186 + 689411187.

It is an arithmetic number, because the mean of its divisors is an integer number (689411187).

Almost surely, 2^1378822373 is an apocalyptic number.

It is an amenable number.

1378822373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378822373 is an equidigital number, since it uses as much as digits as its factorization.

1378822373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 1378822373 is about 37132.4975324849. The cubic root of 1378822373 is about 1113.0195018146.

The spelling of 1378822373 in words is "one billion, three hundred seventy-eight million, eight hundred twenty-two thousand, three hundred seventy-three".