38660918 has 4 divisors (see below), whose sum is σ = 57991380. Its totient is φ = 19330458.

The previous prime is 38660917. The next prime is 38660927. The reversal of 38660918 is 81906683.

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: 81906683 = 137 ⋅597859.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38660911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9665228 + ... + 9665231.

It is an arithmetic number, because the mean of its divisors is an integer number (14497845).

Almost surely, 2^38660918 is an apocalyptic number.

38660918 is a deficient number, since it is larger than the sum of its proper divisors (19330462).

38660918 is a wasteful number, since it uses less digits than its factorization.

38660918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19330461.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 38660918 is about 6217.7904435579. The cubic root of 38660918 is about 338.1354626661.

The spelling of 38660918 in words is "thirty-eight million, six hundred sixty thousand, nine hundred eighteen".