38643963 has 8 divisors (see below), whose sum is σ = 51709776. Its totient is φ = 25670400.

The previous prime is 38643959. The next prime is 38643973. The reversal of 38643963 is 36934683.

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

It is not a de Polignac number, because 38643963 - 2² = 38643959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38643923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22078 + ... + 23763.

It is an arithmetic number, because the mean of its divisors is an integer number (6463722).

Almost surely, 2^38643963 is an apocalyptic number.

38643963 is a deficient number, since it is larger than the sum of its proper divisors (13065813).

38643963 is a wasteful number, since it uses less digits than its factorization.

38643963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46125.

The product of its digits is 279936, while the sum is 42.

The square root of 38643963 is about 6216.4268675824. The cubic root of 38643963 is about 338.0860249276.

The spelling of 38643963 in words is "thirty-eight million, six hundred forty-three thousand, nine hundred sixty-three".