38424167993 has 2 divisors, whose sum is σ = 38424167994. Its totient is φ = 38424167992.

The previous prime is 38424167963. The next prime is 38424168011. The reversal of 38424167993 is 39976142483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31220062864 + 7204105129 = 176692^2 + 84877^2 .

It is a cyclic number.

It is not a de Polignac number, because 38424167993 - 2¹⁴ = 38424151609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38424167933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19212083996 + 19212083997.

It is an arithmetic number, because the mean of its divisors is an integer number (19212083997).

Almost surely, 2^38424167993 is an apocalyptic number.

It is an amenable number.

38424167993 is a deficient number, since it is larger than the sum of its proper divisors (1).

38424167993 is an equidigital number, since it uses as much as digits as its factorization.

38424167993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 56.

The spelling of 38424167993 in words is "thirty-eight billion, four hundred twenty-four million, one hundred sixty-seven thousand, nine hundred ninety-three".