38430442493609 has 2 divisors, whose sum is σ = 38430442493610. Its totient is φ = 38430442493608.

The previous prime is 38430442493561. The next prime is 38430442493623. The reversal of 38430442493609 is 90639424403483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25769633904400 + 12660808589209 = 5076380^2 + 3558203^2 .

It is an emirp because it is prime and its reverse (90639424403483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38430442493609 - 2¹⁶ = 38430442428073 is a prime.

It is a super-4 number, since 4×38430442493609⁴ (a number of 55 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (38430442493699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19215221246804 + 19215221246805.

It is an arithmetic number, because the mean of its divisors is an integer number (19215221246805).

Almost surely, 2^{38430442493609} is an apocalyptic number.

It is an amenable number.

38430442493609 is a deficient number, since it is larger than the sum of its proper divisors (1).

38430442493609 is an equidigital number, since it uses as much as digits as its factorization.

38430442493609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53747712, while the sum is 59.

The spelling of 38430442493609 in words is "thirty-eight trillion, four hundred thirty billion, four hundred forty-two million, four hundred ninety-three thousand, six hundred nine".