38778853 has 4 divisors (see below), whose sum is σ = 41059980. Its totient is φ = 36497728.

The previous prime is 38778847. The next prime is 38778899. The reversal of 38778853 is 35887783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35887783 = 113 ⋅317591.

It can be written as a sum of positive squares in 2 ways, for example, as 32638369 + 6140484 = 5713^2 + 2478^2 .

It is a cyclic number.

It is not a de Polignac number, because 38778853 - 2¹³ = 38770661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38778797 and 38778806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38778823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140538 + ... + 1140571.

It is an arithmetic number, because the mean of its divisors is an integer number (10264995).

Almost surely, 2^38778853 is an apocalyptic number.

It is an amenable number.

38778853 is a deficient number, since it is larger than the sum of its proper divisors (2281127).

38778853 is a wasteful number, since it uses less digits than its factorization.

38778853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281126.

The product of its digits is 1128960, while the sum is 49.

The square root of 38778853 is about 6227.2668964803. The cubic root of 38778853 is about 338.4789406726.

The spelling of 38778853 in words is "thirty-eight million, seven hundred seventy-eight thousand, eight hundred fifty-three".