38994201899381 has 2 divisors, whose sum is σ = 38994201899382. Its totient is φ = 38994201899380.

The previous prime is 38994201899371. The next prime is 38994201899431. The reversal of 38994201899381 is 18399810249983.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27712496518756 + 11281705380625 = 5264266^2 + 3358825^2 .

It is an emirp because it is prime and its reverse (18399810249983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38994201899381 - 2³⁴ = 38977022030197 is a prime.

It is a super-2 number, since 2×38994201899381² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38994201899299 and 38994201899308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38994201899351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19497100949690 + 19497100949691.

It is an arithmetic number, because the mean of its divisors is an integer number (19497100949691).

Almost surely, 2^{38994201899381} is an apocalyptic number.

It is an amenable number.

38994201899381 is a deficient number, since it is larger than the sum of its proper divisors (1).

38994201899381 is an equidigital number, since it uses as much as digits as its factorization.

38994201899381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241864704, while the sum is 74.

The spelling of 38994201899381 in words is "thirty-eight trillion, nine hundred ninety-four billion, two hundred one million, eight hundred ninety-nine thousand, three hundred eighty-one".