38148013 has 4 divisors (see below), whose sum is σ = 38169148. Its totient is φ = 38126880.

The previous prime is 38147987. The next prime is 38148041. The reversal of 38148013 is 31084183.

38148013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31084183 = 13 ⋅2391091.

It can be written as a sum of positive squares in 2 ways, for example, as 24472809 + 13675204 = 4947^2 + 3698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38148013 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 (38148083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7578 + ... + 11563.

It is an arithmetic number, because the mean of its divisors is an integer number (9542287).

Almost surely, 2^38148013 is an apocalyptic number.

It is an amenable number.

38148013 is a deficient number, since it is larger than the sum of its proper divisors (21135).

38148013 is a wasteful number, since it uses less digits than its factorization.

38148013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21134.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 38148013 is about 6176.4077747506. The cubic root of 38148013 is about 336.6334804832.

The spelling of 38148013 in words is "thirty-eight million, one hundred forty-eight thousand, thirteen".