133473138 has 64 divisors (see below), whose sum is σ = 297216000. Its totient is φ = 39783744.

The previous prime is 133473089. The next prime is 133473139. The reversal of 133473138 is 831374331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 133473099 and 133473108.

It is not an unprimeable number, because it can be changed into a prime (133473139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154953 + ... + 155811.

It is an arithmetic number, because the mean of its divisors is an integer number (4644000).

Almost surely, 2^133473138 is an apocalyptic number.

133473138 is an abundant number, since it is smaller than the sum of its proper divisors (163742862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133473138 is a wasteful number, since it uses less digits than its factorization.

133473138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its digits is 18144, while the sum is 33.

The square root of 133473138 is about 11553.0575173847. The cubic root of 133473138 is about 511.0514486159.

The spelling of 133473138 in words is "one hundred thirty-three million, four hundred seventy-three thousand, one hundred thirty-eight".