38161789 has 4 divisors (see below), whose sum is σ = 38314080. Its totient is φ = 38009500.

The previous prime is 38161759. The next prime is 38161801. The reversal of 38161789 is 98716183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98716183 = 31 ⋅3184393.

It is a cyclic number.

It is not a de Polignac number, because 38161789 - 2⁵ = 38161757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38161729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75769 + ... + 76270.

It is an arithmetic number, because the mean of its divisors is an integer number (9578520).

Almost surely, 2^38161789 is an apocalyptic number.

It is an amenable number.

38161789 is a deficient number, since it is larger than the sum of its proper divisors (152291).

38161789 is a wasteful number, since it uses less digits than its factorization.

38161789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152290.

The product of its digits is 72576, while the sum is 43.

The square root of 38161789 is about 6177.5228854291. The cubic root of 38161789 is about 336.6739972698.

The spelling of 38161789 in words is "thirty-eight million, one hundred sixty-one thousand, seven hundred eighty-nine".