38474821673 has 2 divisors, whose sum is σ = 38474821674. Its totient is φ = 38474821672.

The previous prime is 38474821579. The next prime is 38474821691. The reversal of 38474821673 is 37612847483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38426976784 + 47844889 = 196028^2 + 6917^2 .

It is an emirp because it is prime and its reverse (37612847483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38474821673 - 2²⁸ = 38206386217 is a prime.

It is not a weakly prime, because it can be changed into another prime (38474821373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19237410836 + 19237410837.

It is an arithmetic number, because the mean of its divisors is an integer number (19237410837).

Almost surely, 2^38474821673 is an apocalyptic number.

It is an amenable number.

38474821673 is a deficient number, since it is larger than the sum of its proper divisors (1).

38474821673 is an equidigital number, since it uses as much as digits as its factorization.

38474821673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 53.

The spelling of 38474821673 in words is "thirty-eight billion, four hundred seventy-four million, eight hundred twenty-one thousand, six hundred seventy-three".