83187438 has 16 divisors (see below), whose sum is σ = 168023376. Its totient is φ = 27454400.

The previous prime is 83187431. The next prime is 83187473. The reversal of 83187438 is 83478138.

It is a self number, because there is not a number n which added to its sum of digits gives 83187438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83187431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68031 + ... + 69242.

It is an arithmetic number, because the mean of its divisors is an integer number (10501461).

Almost surely, 2^83187438 is an apocalyptic number.

83187438 is an abundant number, since it is smaller than the sum of its proper divisors (84835938).

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

83187438 is a wasteful number, since it uses less digits than its factorization.

83187438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137379.

The product of its digits is 129024, while the sum is 42.

The square root of 83187438 is about 9120.7147746216. The cubic root of 83187438 is about 436.5351808407.

The spelling of 83187438 in words is "eighty-three million, one hundred eighty-seven thousand, four hundred thirty-eight".