133161836 has 6 divisors (see below), whose sum is σ = 233033220. Its totient is φ = 66580916.

The previous prime is 133161829. The next prime is 133161863. The reversal of 133161836 is 638161331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16645226 + ... + 16645233.

It is an arithmetic number, because the mean of its divisors is an integer number (38838870).

Almost surely, 2^133161836 is an apocalyptic number.

It is an amenable number.

133161836 is a deficient number, since it is larger than the sum of its proper divisors (99871384).

133161836 is a wasteful number, since it uses less digits than its factorization.

133161836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33290463 (or 33290461 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 133161836 is about 11539.5769419854. The cubic root of 133161836 is about 510.6538275792.

The spelling of 133161836 in words is "one hundred thirty-three million, one hundred sixty-one thousand, eight hundred thirty-six".