133451992 has 8 divisors (see below), whose sum is σ = 250222500. Its totient is φ = 66725992.

The previous prime is 133451977. The next prime is 133452001. The reversal of 133451992 is 299154331.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8340742 + ... + 8340757.

Almost surely, 2^133451992 is an apocalyptic number.

It is an amenable number.

133451992 is a deficient number, since it is larger than the sum of its proper divisors (116770508).

133451992 is a wasteful number, since it uses less digits than its factorization.

133451992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16681505 (or 16681501 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 133451992 is about 11552.1423121428. The cubic root of 133451992 is about 511.0244587540.

The spelling of 133451992 in words is "one hundred thirty-three million, four hundred fifty-one thousand, nine hundred ninety-two".