38529746449 has 2 divisors, whose sum is σ = 38529746450. Its totient is φ = 38529746448.

The previous prime is 38529746371. The next prime is 38529746461. The reversal of 38529746449 is 94464792583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38394443025 + 135303424 = 195945^2 + 11632^2 .

It is a cyclic number.

It is not a de Polignac number, because 38529746449 - 2²¹ = 38527649297 is a prime.

It is a super-2 number, since 2×38529746449² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38529756449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19264873224 + 19264873225.

It is an arithmetic number, because the mean of its divisors is an integer number (19264873225).

Almost surely, 2^38529746449 is an apocalyptic number.

It is an amenable number.

38529746449 is a deficient number, since it is larger than the sum of its proper divisors (1).

38529746449 is an equidigital number, since it uses as much as digits as its factorization.

38529746449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 61.

The spelling of 38529746449 in words is "thirty-eight billion, five hundred twenty-nine million, seven hundred forty-six thousand, four hundred forty-nine".