133801851 has 8 divisors (see below), whose sum is σ = 179600400. Its totient is φ = 88602272.

The previous prime is 133801823. The next prime is 133801861. The reversal of 133801851 is 158108331.

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

It is a cyclic number.

It is not a de Polignac number, because 133801851 - 2¹⁰ = 133800827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133801861) 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, 149220 + ... + 150113.

It is an arithmetic number, because the mean of its divisors is an integer number (22450050).

Almost surely, 2^133801851 is an apocalyptic number.

133801851 is a deficient number, since it is larger than the sum of its proper divisors (45798549).

133801851 is a wasteful number, since it uses less digits than its factorization.

133801851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299485.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 133801851 is about 11567.2750032149. The cubic root of 133801851 is about 511.4706379241.

The spelling of 133801851 in words is "one hundred thirty-three million, eight hundred one thousand, eight hundred fifty-one".