103778419 has 2 divisors, whose sum is σ = 103778420. Its totient is φ = 103778418.

The previous prime is 103778417. The next prime is 103778473. The reversal of 103778419 is 914877301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103778419 - 2¹ = 103778417 is a prime.

It is a super-2 number, since 2×103778419² = 21539920500279122, which contains 22 as substring.

Together with 103778417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (103778417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51889209 + 51889210.

It is an arithmetic number, because the mean of its divisors is an integer number (51889210).

Almost surely, 2^103778419 is an apocalyptic number.

103778419 is a deficient number, since it is larger than the sum of its proper divisors (1).

103778419 is an equidigital number, since it uses as much as digits as its factorization.

103778419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 103778419 is about 10187.1693320569. The cubic root of 103778419 is about 469.9327186020.

The spelling of 103778419 in words is "one hundred three million, seven hundred seventy-eight thousand, four hundred nineteen".