133186707 has 12 divisors (see below), whose sum is σ = 197402520. Its totient is φ = 88751160.

The previous prime is 133186693. The next prime is 133186727. The reversal of 133186707 is 707681331.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 133186707 - 2¹⁸ = 132924563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133186727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58857 + ... + 61077.

It is an arithmetic number, because the mean of its divisors is an integer number (16450210).

Almost surely, 2^133186707 is an apocalyptic number.

133186707 is a deficient number, since it is larger than the sum of its proper divisors (64215813).

133186707 is an frugal number, since it uses more digits than its factorization.

133186707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 133186707 is about 11540.6545308314. The cubic root of 133186707 is about 510.6856176704.

Multiplying 133186707 by its product of nonzero digits (21168), we get a square (2819296213776 = 1679076²).

The spelling of 133186707 in words is "one hundred thirty-three million, one hundred eighty-six thousand, seven hundred seven".