133863837 has 8 divisors (see below), whose sum is σ = 178678560. Its totient is φ = 89145840.

The previous prime is 133863833. The next prime is 133863839. The reversal of 133863837 is 738368331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133863837 - 2² = 133863833 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133863833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20887 + ... + 26532.

It is an arithmetic number, because the mean of its divisors is an integer number (22334820).

Almost surely, 2^133863837 is an apocalyptic number.

It is an amenable number.

133863837 is a deficient number, since it is larger than the sum of its proper divisors (44814723).

133863837 is an equidigital number, since it uses as much as digits as its factorization.

133863837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48363.

The product of its digits is 217728, while the sum is 42.

The square root of 133863837 is about 11569.9540621387. The cubic root of 133863837 is about 511.5496082427.

The spelling of 133863837 in words is "one hundred thirty-three million, eight hundred sixty-three thousand, eight hundred thirty-seven".