38778119 has 2 divisors, whose sum is σ = 38778120. Its totient is φ = 38778118.

The previous prime is 38778083. The next prime is 38778121. The reversal of 38778119 is 91187783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38778119 is a prime.

It is a super-2 number, since 2×38778119² = 3007485026356322, which contains 22 as substring.

Together with 38778121, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38778119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38778319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19389059 + 19389060.

It is an arithmetic number, because the mean of its divisors is an integer number (19389060).

Almost surely, 2^38778119 is an apocalyptic number.

38778119 is a deficient number, since it is larger than the sum of its proper divisors (1).

38778119 is an equidigital number, since it uses as much as digits as its factorization.

38778119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 44.

The square root of 38778119 is about 6227.2079618397. The cubic root of 38778119 is about 338.4768051005.

The spelling of 38778119 in words is "thirty-eight million, seven hundred seventy-eight thousand, one hundred nineteen".