133919860 has 12 divisors (see below), whose sum is σ = 281231748. Its totient is φ = 53567936.

The previous prime is 133919837. The next prime is 133919861. The reversal of 133919860 is 68919331.

It can be written as a sum of positive squares in 2 ways, for example, as 28323684 + 105596176 = 5322^2 + 10276^2 .

It is a super-3 number, since 3×133919860³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133919861) 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, 3347977 + ... + 3348016.

It is an arithmetic number, because the mean of its divisors is an integer number (23435979).

Almost surely, 2^133919860 is an apocalyptic number.

133919860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133919860 is an abundant number, since it is smaller than the sum of its proper divisors (147311888).

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

133919860 is a wasteful number, since it uses less digits than its factorization.

133919860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696002 (or 6696000 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 133919860 is about 11572.3748643051. The cubic root of 133919860 is about 511.6209607139.

The spelling of 133919860 in words is "one hundred thirty-three million, nine hundred nineteen thousand, eight hundred sixty".