38742018 has 32 divisors (see below), whose sum is σ = 88826496. Its totient is φ = 11035008.

The previous prime is 38742001. The next prime is 38742019. The reversal of 38742018 is 81024783.

It is a self number, because there is not a number n which added to its sum of digits gives 38742018.

It is not an unprimeable number, because it can be changed into a prime (38742019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14430 + ... + 16902.

It is an arithmetic number, because the mean of its divisors is an integer number (2775828).

Almost surely, 2^38742018 is an apocalyptic number.

38742018 is an abundant number, since it is smaller than the sum of its proper divisors (50084478).

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

38742018 is a wasteful number, since it uses less digits than its factorization.

38742018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 38742018 is about 6224.3086363065. The cubic root of 38742018 is about 338.3717360105.

The spelling of 38742018 in words is "thirty-eight million, seven hundred forty-two thousand, eighteen".