133891494 has 32 divisors (see below), whose sum is σ = 292913280. Its totient is φ = 40464000.

The previous prime is 133891489. The next prime is 133891501. The reversal of 133891494 is 494198331.

133891494 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23937 + ... + 28995.

It is an arithmetic number, because the mean of its divisors is an integer number (9153540).

Almost surely, 2^133891494 is an apocalyptic number.

133891494 is an abundant number, since it is smaller than the sum of its proper divisors (159021786).

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

133891494 is a wasteful number, since it uses less digits than its factorization.

133891494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476.

The product of its digits is 93312, while the sum is 42.

The square root of 133891494 is about 11571.1492082679. The cubic root of 133891494 is about 511.5848354647.

The spelling of 133891494 in words is "one hundred thirty-three million, eight hundred ninety-one thousand, four hundred ninety-four".