38243761 has 4 divisors (see below), whose sum is σ = 40493412. Its totient is φ = 35994112.

The previous prime is 38243749. The next prime is 38243783. The reversal of 38243761 is 16734283.

It is a happy number.

38243761 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: 16734283 = 113 ⋅148091.

It can be written as a sum of positive squares in 2 ways, for example, as 10523536 + 27720225 = 3244^2 + 5265^2 .

It is a cyclic number.

It is not a de Polignac number, because 38243761 - 2⁵ = 38243729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38243701) 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, 1124800 + ... + 1124833.

It is an arithmetic number, because the mean of its divisors is an integer number (10123353).

Almost surely, 2^38243761 is an apocalyptic number.

It is an amenable number.

38243761 is a deficient number, since it is larger than the sum of its proper divisors (2249651).

38243761 is a wasteful number, since it uses less digits than its factorization.

38243761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249650.

The product of its digits is 24192, while the sum is 34.

The square root of 38243761 is about 6184.1540246019. The cubic root of 38243761 is about 336.9148848610.

The spelling of 38243761 in words is "thirty-eight million, two hundred forty-three thousand, seven hundred sixty-one".