133969816 has 16 divisors (see below), whose sum is σ = 252648000. Its totient is φ = 66597024.

The previous prime is 133969813. The next prime is 133969853. The reversal of 133969816 is 618969331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133969813) 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 3 ways as a sum of consecutive naturals, for example, 47016 + ... + 49783.

It is an arithmetic number, because the mean of its divisors is an integer number (15790500).

Almost surely, 2^133969816 is an apocalyptic number.

It is an amenable number.

133969816 is a deficient number, since it is larger than the sum of its proper divisors (118678184).

133969816 is a wasteful number, since it uses less digits than its factorization.

133969816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96978 (or 96974 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 133969816 is about 11574.5330791354. The cubic root of 133969816 is about 511.6845693013.

The spelling of 133969816 in words is "one hundred thirty-three million, nine hundred sixty-nine thousand, eight hundred sixteen".