38140918 has 4 divisors (see below), whose sum is σ = 57211380. Its totient is φ = 19070458.

The previous prime is 38140913. The next prime is 38140919. The reversal of 38140918 is 81904183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81904183 = 41 ⋅1997663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38140913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9535228 + ... + 9535231.

It is an arithmetic number, because the mean of its divisors is an integer number (14302845).

Almost surely, 2^38140918 is an apocalyptic number.

38140918 is a deficient number, since it is larger than the sum of its proper divisors (19070462).

38140918 is a wasteful number, since it uses less digits than its factorization.

38140918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19070461.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 38140918 is about 6175.8333850582. The cubic root of 38140918 is about 336.6126094736.

The spelling of 38140918 in words is "thirty-eight million, one hundred forty thousand, nine hundred eighteen".