38419793398621 has 4 divisors (see below), whose sum is σ = 38454437036700. Its totient is φ = 38385149760544.

The previous prime is 38419793398601. The next prime is 38419793398631. The reversal of 38419793398621 is 12689339791483.

38419793398621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4499536106521 + 33920257292100 = 2121211^2 + 5824110^2 .

It is a cyclic number.

It is not a de Polignac number, because 38419793398621 - 2²⁵ = 38419759844189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38419793398601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17321817376 + ... + 17321819593.

It is an arithmetic number, because the mean of its divisors is an integer number (9613609259175).

Almost surely, 2^{38419793398621} is an apocalyptic number.

It is an amenable number.

38419793398621 is a deficient number, since it is larger than the sum of its proper divisors (34643638079).

38419793398621 is a wasteful number, since it uses less digits than its factorization.

38419793398621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34643638078.

The product of its digits is 423263232, while the sum is 73.

The spelling of 38419793398621 in words is "thirty-eight trillion, four hundred nineteen billion, seven hundred ninety-three million, three hundred ninety-eight thousand, six hundred twenty-one".