38157666 has 16 divisors (see below), whose sum is σ = 77103264. Its totient is φ = 12587904.

The previous prime is 38157661. The next prime is 38157697. The reversal of 38157666 is 66675183.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38157661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32200 + ... + 33363.

It is an arithmetic number, because the mean of its divisors is an integer number (4818954).

Almost surely, 2^38157666 is an apocalyptic number.

38157666 is an abundant number, since it is smaller than the sum of its proper divisors (38945598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38157666 is a wasteful number, since it uses less digits than its factorization.

38157666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65665.

The product of its digits is 181440, while the sum is 42.

The square root of 38157666 is about 6177.1891666032. The cubic root of 38157666 is about 336.6618720793.

The spelling of 38157666 in words is "thirty-eight million, one hundred fifty-seven thousand, six hundred sixty-six".