133389515 has 24 divisors (see below), whose sum is σ = 186773040. Its totient is φ = 91186368.

The previous prime is 133389511. The next prime is 133389521. The reversal of 133389515 is 515983331.

It is not a de Polignac number, because 133389515 - 2² = 133389511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133389511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107921 + ... + 109149.

It is an arithmetic number, because the mean of its divisors is an integer number (7782210).

Almost surely, 2^133389515 is an apocalyptic number.

133389515 is a deficient number, since it is larger than the sum of its proper divisors (53383525).

133389515 is a wasteful number, since it uses less digits than its factorization.

133389515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1684 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 133389515 is about 11549.4378651084. The cubic root of 133389515 is about 510.9446990884.

The spelling of 133389515 in words is "one hundred thirty-three million, three hundred eighty-nine thousand, five hundred fifteen".