133161850 has 48 divisors (see below), whose sum is σ = 268717176. Its totient is φ = 48896000.

The previous prime is 133161829. The next prime is 133161863. The reversal of 133161850 is 58161331.

It can be written as a sum of positive squares in 12 ways, for example, as 15374241 + 117787609 = 3921^2 + 10853^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32940 + ... + 36760.

Almost surely, 2^133161850 is an apocalyptic number.

133161850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133161850 is an abundant number, since it is smaller than the sum of its proper divisors (135555326).

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

133161850 is a wasteful number, since it uses less digits than its factorization.

133161850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891 (or 3886 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 133161850 is about 11539.5775485934. The cubic root of 133161850 is about 510.6538454751.

The spelling of 133161850 in words is "one hundred thirty-three million, one hundred sixty-one thousand, eight hundred fifty".