38648649 has 16 divisors (see below), whose sum is σ = 55645632. Its totient is φ = 23719488.

The previous prime is 38648647. The next prime is 38648651. The reversal of 38648649 is 94684683.

It is an interprime number because it is at equal distance from previous prime (38648647) and next prime (38648651).

It is not a de Polignac number, because 38648649 - 2¹ = 38648647 is a prime.

It is a Curzon number.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 38648598 and 38648607.

It is not an unprimeable number, because it can be changed into a prime (38648647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16159 + ... + 18395.

It is an arithmetic number, because the mean of its divisors is an integer number (3477852).

Almost surely, 2^38648649 is an apocalyptic number.

38648649 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

38648649 is a deficient number, since it is larger than the sum of its proper divisors (16996983).

38648649 is a wasteful number, since it uses less digits than its factorization.

38648649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696.

The product of its digits is 995328, while the sum is 48.

The square root of 38648649 is about 6216.8037607761. The cubic root of 38648649 is about 338.0996899087.

The spelling of 38648649 in words is "thirty-eight million, six hundred forty-eight thousand, six hundred forty-nine".