38919142 has 4 divisors (see below), whose sum is σ = 58378716. Its totient is φ = 19459570.

The previous prime is 38919109. The next prime is 38919143. The reversal of 38919142 is 24191983.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×38919142² = 3029399228032328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38919143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9729784 + ... + 9729787.

It is an arithmetic number, because the mean of its divisors is an integer number (14594679).

Almost surely, 2^38919142 is an apocalyptic number.

38919142 is a deficient number, since it is larger than the sum of its proper divisors (19459574).

38919142 is a wasteful number, since it uses less digits than its factorization.

38919142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19459573.

The product of its digits is 15552, while the sum is 37.

The square root of 38919142 is about 6238.5208182709. The cubic root of 38919142 is about 338.8866175527.

The spelling of 38919142 in words is "thirty-eight million, nine hundred nineteen thousand, one hundred forty-two".