38382774973 has 2 divisors, whose sum is σ = 38382774974. Its totient is φ = 38382774972.

The previous prime is 38382774943. The next prime is 38382774977. The reversal of 38382774973 is 37947728383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28071997209 + 10310777764 = 167547^2 + 101542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38382774973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38382774977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19191387486 + 19191387487.

It is an arithmetic number, because the mean of its divisors is an integer number (19191387487).

Almost surely, 2^38382774973 is an apocalyptic number.

It is an amenable number.

38382774973 is a deficient number, since it is larger than the sum of its proper divisors (1).

38382774973 is an equidigital number, since it uses as much as digits as its factorization.

38382774973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42674688, while the sum is 61.

The spelling of 38382774973 in words is "thirty-eight billion, three hundred eighty-two million, seven hundred seventy-four thousand, nine hundred seventy-three".