133683738 has 16 divisors (see below), whose sum is σ = 274594080. Its totient is φ = 43356816.

The previous prime is 133683727. The next prime is 133683779. The reversal of 133683738 is 837386331.

It is a self number, because there is not a number n which added to its sum of digits gives 133683738.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300868 + ... + 301311.

It is an arithmetic number, because the mean of its divisors is an integer number (17162130).

Almost surely, 2^133683738 is an apocalyptic number.

133683738 is an abundant number, since it is smaller than the sum of its proper divisors (140910342).

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

133683738 is a wasteful number, since it uses less digits than its factorization.

133683738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602221.

The product of its digits is 217728, while the sum is 42.

The square root of 133683738 is about 11562.1683952449. The cubic root of 133683738 is about 511.3200941270.

It can be divided in two parts, 133683 and 738, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 133683738 in words is "one hundred thirty-three million, six hundred eighty-three thousand, seven hundred thirty-eight".