38405161 has 2 divisors, whose sum is σ = 38405162. Its totient is φ = 38405160.

The previous prime is 38405153. The next prime is 38405177. The reversal of 38405161 is 16150483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28419561 + 9985600 = 5331^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 38405161 - 2³ = 38405153 is a prime.

It is not a weakly prime, because it can be changed into another prime (38406161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19202580 + 19202581.

It is an arithmetic number, because the mean of its divisors is an integer number (19202581).

Almost surely, 2^38405161 is an apocalyptic number.

It is an amenable number.

38405161 is a deficient number, since it is larger than the sum of its proper divisors (1).

38405161 is an equidigital number, since it uses as much as digits as its factorization.

38405161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 38405161 is about 6197.1897663376. The cubic root of 38405161 is about 337.3881798741.

The spelling of 38405161 in words is "thirty-eight million, four hundred five thousand, one hundred sixty-one".