38686453 has 4 divisors (see below), whose sum is σ = 41662348. Its totient is φ = 35710560.

The previous prime is 38686429. The next prime is 38686463. The reversal of 38686453 is 35468683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35468683 = 4931 ⋅7193.

It can be written as a sum of positive squares in 2 ways, for example, as 26450449 + 12236004 = 5143^2 + 3498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38686453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38686463) 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, 1487928 + ... + 1487953.

It is an arithmetic number, because the mean of its divisors is an integer number (10415587).

Almost surely, 2^38686453 is an apocalyptic number.

It is an amenable number.

38686453 is a deficient number, since it is larger than the sum of its proper divisors (2975895).

38686453 is a wasteful number, since it uses less digits than its factorization.

38686453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975894.

The product of its digits is 414720, while the sum is 43.

The square root of 38686453 is about 6219.8434867768. The cubic root of 38686453 is about 338.2098908763.

The spelling of 38686453 in words is "thirty-eight million, six hundred eighty-six thousand, four hundred fifty-three".