38780493 has 4 divisors (see below), whose sum is σ = 51707328. Its totient is φ = 25853660.

The previous prime is 38780491. The next prime is 38780509. The reversal of 38780493 is 39408783.

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.

It is a cyclic number.

It is not a de Polignac number, because 38780493 - 2¹ = 38780491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38780491) 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, 6463413 + ... + 6463418.

It is an arithmetic number, because the mean of its divisors is an integer number (12926832).

Almost surely, 2^38780493 is an apocalyptic number.

It is an amenable number.

38780493 is a deficient number, since it is larger than the sum of its proper divisors (12926835).

38780493 is a wasteful number, since it uses less digits than its factorization.

38780493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926834.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 38780493 is about 6227.3985740436. The cubic root of 38780493 is about 338.4837121532.

The spelling of 38780493 in words is "thirty-eight million, seven hundred eighty thousand, four hundred ninety-three".