38190389 has 4 divisors (see below), whose sum is σ = 38465280. Its totient is φ = 37915500.

The previous prime is 38190377. The next prime is 38190409. The reversal of 38190389 is 98309183.

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: 98309183 = 7 ⋅14044169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38190389 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 (38190319) 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, 137237 + ... + 137514.

It is an arithmetic number, because the mean of its divisors is an integer number (9616320).

Almost surely, 2^38190389 is an apocalyptic number.

It is an amenable number.

38190389 is a deficient number, since it is larger than the sum of its proper divisors (274891).

38190389 is a wasteful number, since it uses less digits than its factorization.

38190389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274890.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 38190389 is about 6179.8372955928. The cubic root of 38190389 is about 336.7580820062.

The spelling of 38190389 in words is "thirty-eight million, one hundred ninety thousand, three hundred eighty-nine".