38387391593609 has 2 divisors, whose sum is σ = 38387391593610. Its totient is φ = 38387391593608.

The previous prime is 38387391593597. The next prime is 38387391593641. The reversal of 38387391593609 is 90639519378383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31066443817984 + 7320947775625 = 5573728^2 + 2705725^2 .

It is a cyclic number.

It is not a de Polignac number, because 38387391593609 - 2²⁰ = 38387390545033 is a prime.

It is a super-2 number, since 2×38387391593609² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38387391593669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19193695796804 + 19193695796805.

It is an arithmetic number, because the mean of its divisors is an integer number (19193695796805).

Almost surely, 2^{38387391593609} is an apocalyptic number.

It is an amenable number.

38387391593609 is a deficient number, since it is larger than the sum of its proper divisors (1).

38387391593609 is an equidigital number, since it uses as much as digits as its factorization.

38387391593609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793618560, while the sum is 74.

The spelling of 38387391593609 in words is "thirty-eight trillion, three hundred eighty-seven billion, three hundred ninety-one million, five hundred ninety-three thousand, six hundred nine".