133945915 has 8 divisors (see below), whose sum is σ = 169194960. Its totient is φ = 101516832.

The previous prime is 133945913. The next prime is 133945919. The reversal of 133945915 is 519549331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133945915 - 2¹ = 133945913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133945913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704884 + ... + 705073.

It is an arithmetic number, because the mean of its divisors is an integer number (21149370).

Almost surely, 2^133945915 is an apocalyptic number.

133945915 is a deficient number, since it is larger than the sum of its proper divisors (35249045).

133945915 is a wasteful number, since it uses less digits than its factorization.

133945915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409981.

The product of its digits is 72900, while the sum is 40.

The square root of 133945915 is about 11573.5005508273. The cubic root of 133945915 is about 511.6541383166.

The spelling of 133945915 in words is "one hundred thirty-three million, nine hundred forty-five thousand, nine hundred fifteen".