38149942 has 4 divisors (see below), whose sum is σ = 57224916. Its totient is φ = 19074970.

The previous prime is 38149883. The next prime is 38149957. The reversal of 38149942 is 24994183.

38149942 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.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 38149895 and 38149904.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9537484 + ... + 9537487.

It is an arithmetic number, because the mean of its divisors is an integer number (14306229).

Almost surely, 2^38149942 is an apocalyptic number.

38149942 is a deficient number, since it is larger than the sum of its proper divisors (19074974).

38149942 is a wasteful number, since it uses less digits than its factorization.

38149942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19074973.

The product of its digits is 62208, while the sum is 40.

The square root of 38149942 is about 6176.5639315075. The cubic root of 38149942 is about 336.6391544793.

The spelling of 38149942 in words is "thirty-eight million, one hundred forty-nine thousand, nine hundred forty-two".