133953915 has 16 divisors (see below), whose sum is σ = 216295200. Its totient is φ = 70785792.

The previous prime is 133953851. The next prime is 133953947. The reversal of 133953915 is 519359331.

It is not a de Polignac number, because 133953915 - 2⁶ = 133953851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39330 + ... + 42599.

It is an arithmetic number, because the mean of its divisors is an integer number (13518450).

Almost surely, 2^133953915 is an apocalyptic number.

133953915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133953915 is a deficient number, since it is larger than the sum of its proper divisors (82341285).

133953915 is a wasteful number, since it uses less digits than its factorization.

133953915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82046.

The product of its digits is 54675, while the sum is 39.

The square root of 133953915 is about 11573.8461627931. The cubic root of 133953915 is about 511.6643243971.

The spelling of 133953915 in words is "one hundred thirty-three million, nine hundred fifty-three thousand, nine hundred fifteen".