133641983 has 4 divisors (see below), whose sum is σ = 139452528. Its totient is φ = 127831440.

The previous prime is 133641943. The next prime is 133641997. The reversal of 133641983 is 389146331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133641983 - 2¹⁴ = 133625599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133641943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905238 + ... + 2905283.

It is an arithmetic number, because the mean of its divisors is an integer number (34863132).

Almost surely, 2^133641983 is an apocalyptic number.

133641983 is a deficient number, since it is larger than the sum of its proper divisors (5810545).

133641983 is an equidigital number, since it uses as much as digits as its factorization.

133641983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810544.

The product of its digits is 46656, while the sum is 38.

The square root of 133641983 is about 11560.3625808190. The cubic root of 133641983 is about 511.2668530620.

The spelling of 133641983 in words is "one hundred thirty-three million, six hundred forty-one thousand, nine hundred eighty-three".