38181894 has 32 divisors (see below), whose sum is σ = 79632384. Its totient is φ = 12191040.

The previous prime is 38181877. The next prime is 38181901. The reversal of 38181894 is 49818183.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18162 + ... + 20154.

It is an arithmetic number, because the mean of its divisors is an integer number (2488512).

Almost surely, 2^38181894 is an apocalyptic number.

38181894 is an abundant number, since it is smaller than the sum of its proper divisors (41450490).

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

38181894 is a wasteful number, since it uses less digits than its factorization.

38181894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132.

The product of its digits is 55296, while the sum is 42.

The square root of 38181894 is about 6179.1499415373. The cubic root of 38181894 is about 336.7331108714.

The spelling of 38181894 in words is "thirty-eight million, one hundred eighty-one thousand, eight hundred ninety-four".