133890361 has 16 divisors (see below), whose sum is σ = 152691840. Its totient is φ = 116282880.

The previous prime is 133890353. The next prime is 133890373. The reversal of 133890361 is 163098331.

It is a cyclic number.

It is not a de Polignac number, because 133890361 - 2³ = 133890353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133890391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28780 + ... + 33106.

It is an arithmetic number, because the mean of its divisors is an integer number (9543240).

Almost surely, 2^133890361 is an apocalyptic number.

133890361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133890361 is a deficient number, since it is larger than the sum of its proper divisors (18801479).

133890361 is a wasteful number, since it uses less digits than its factorization.

133890361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4464.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 133890361 is about 11571.1002501923. The cubic root of 133890361 is about 511.5833924373.

The spelling of 133890361 in words is "one hundred thirty-three million, eight hundred ninety thousand, three hundred sixty-one".