38313138 has 32 divisors (see below), whose sum is σ = 81959040. Its totient is φ = 11897600.

The previous prime is 38313133. The next prime is 38313161. The reversal of 38313138 is 83131383.

It is not an unprimeable number, because it can be changed into a prime (38313133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8443 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (2561220).

Almost surely, 2^38313138 is an apocalyptic number.

38313138 is an abundant number, since it is smaller than the sum of its proper divisors (43645902).

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

38313138 is a wasteful number, since it uses less digits than its factorization.

38313138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842.

The product of its digits is 5184, while the sum is 30.

The square root of 38313138 is about 6189.7607385100. The cubic root of 38313138 is about 337.1184912659.

The spelling of 38313138 in words is "thirty-eight million, three hundred thirteen thousand, one hundred thirty-eight".