133981610 has 16 divisors (see below), whose sum is σ = 275619456. Its totient is φ = 45936528.

The previous prime is 133981591. The next prime is 133981619. The reversal of 133981610 is 16189331.

It is not an unprimeable number, because it can be changed into a prime (133981619) 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, 956942 + ... + 957081.

It is an arithmetic number, because the mean of its divisors is an integer number (17226216).

Almost surely, 2^133981610 is an apocalyptic number.

133981610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133981610 is an abundant number, since it is smaller than the sum of its proper divisors (141637846).

133981610 is a wasteful number, since it uses less digits than its factorization.

133981610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914037.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 133981610 is about 11575.0425485179. The cubic root of 133981610 is about 511.6995842026.

The spelling of 133981610 in words is "one hundred thirty-three million, nine hundred eighty-one thousand, six hundred ten".