38661769 has 2 divisors, whose sum is σ = 38661770. Its totient is φ = 38661768.

The previous prime is 38661761. The next prime is 38661797. The reversal of 38661769 is 96716683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35856144 + 2805625 = 5988^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 38661769 - 2³ = 38661761 is a prime.

It is a super-3 number, since 3×38661769³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (38661761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19330884 + 19330885.

It is an arithmetic number, because the mean of its divisors is an integer number (19330885).

Almost surely, 2^38661769 is an apocalyptic number.

It is an amenable number.

38661769 is a deficient number, since it is larger than the sum of its proper divisors (1).

38661769 is an equidigital number, since it uses as much as digits as its factorization.

38661769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 38661769 is about 6217.8588758511. The cubic root of 38661769 is about 338.1379436485.

The spelling of 38661769 in words is "thirty-eight million, six hundred sixty-one thousand, seven hundred sixty-nine".