38278297393 has 8 divisors (see below), whose sum is σ = 43878793280. Its totient is φ = 32710843440.

The previous prime is 38278297339. The next prime is 38278297441. The reversal of 38278297393 is 39379287283.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38278297393 - 2³³ = 29688362801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38278297093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8257998 + ... + 8262631.

It is an arithmetic number, because the mean of its divisors is an integer number (5484849160).

Almost surely, 2^38278297393 is an apocalyptic number.

It is an amenable number.

38278297393 is a deficient number, since it is larger than the sum of its proper divisors (5600495887).

38278297393 is a wasteful number, since it uses less digits than its factorization.

38278297393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16520967.

The product of its digits is 27433728, while the sum is 61.

The spelling of 38278297393 in words is "thirty-eight billion, two hundred seventy-eight million, two hundred ninety-seven thousand, three hundred ninety-three".