38145663 has 6 divisors (see below), whose sum is σ = 55099304. Its totient is φ = 25430436.

The previous prime is 38145659. The next prime is 38145677. The reversal of 38145663 is 36654183.

It is not a de Polignac number, because 38145663 - 2² = 38145659 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 (38145763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2119195 + ... + 2119212.

Almost surely, 2^38145663 is an apocalyptic number.

38145663 is a deficient number, since it is larger than the sum of its proper divisors (16953641).

38145663 is a wasteful number, since it uses less digits than its factorization.

38145663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238413 (or 4238410 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 38145663 is about 6176.2175317908. The cubic root of 38145663 is about 336.6265678914.

The spelling of 38145663 in words is "thirty-eight million, one hundred forty-five thousand, six hundred sixty-three".