38133918 has 24 divisors (see below), whose sum is σ = 82738656. Its totient is φ = 12693600.

The previous prime is 38133913. The next prime is 38133923. The reversal of 38133918 is 81933183.

It is an interprime number because it is at equal distance from previous prime (38133913) and next prime (38133923).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38133911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21298 + ... + 23018.

It is an arithmetic number, because the mean of its divisors is an integer number (3447444).

Almost surely, 2^38133918 is an apocalyptic number.

38133918 is an abundant number, since it is smaller than the sum of its proper divisors (44604738).

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

38133918 is a wasteful number, since it uses less digits than its factorization.

38133918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960 (or 2957 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 38133918 is about 6175.2666339195. The cubic root of 38133918 is about 336.5920153842.

It can be divided in two parts, 38 and 133918, that added together give a square (133956 = 366²).

The spelling of 38133918 in words is "thirty-eight million, one hundred thirty-three thousand, nine hundred eighteen".