133183837 has 4 divisors (see below), whose sum is σ = 133449120. Its totient is φ = 132918556.

The previous prime is 133183829. The next prime is 133183861. The reversal of 133183837 is 738381331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 738381331 = 4729 ⋅156139.

It is a cyclic number.

It is not a de Polignac number, because 133183837 - 2³ = 133183829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133183796 and 133183805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133183807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131887 + ... + 132892.

It is an arithmetic number, because the mean of its divisors is an integer number (33362280).

Almost surely, 2^133183837 is an apocalyptic number.

It is an amenable number.

133183837 is a deficient number, since it is larger than the sum of its proper divisors (265283).

133183837 is an equidigital number, since it uses as much as digits as its factorization.

133183837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265282.

The product of its digits is 36288, while the sum is 37.

The square root of 133183837 is about 11540.5301871275. The cubic root of 133183837 is about 510.6819494408.

The spelling of 133183837 in words is "one hundred thirty-three million, one hundred eighty-three thousand, eight hundred thirty-seven".