133457738 has 4 divisors (see below), whose sum is σ = 200186610. Its totient is φ = 66728868.

The previous prime is 133457719. The next prime is 133457743. The reversal of 133457738 is 837754331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114211969 + 19245769 = 10687^2 + 4387^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133457695 and 133457704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33364433 + ... + 33364436.

Almost surely, 2^133457738 is an apocalyptic number.

133457738 is a deficient number, since it is larger than the sum of its proper divisors (66728872).

133457738 is an equidigital number, since it uses as much as digits as its factorization.

133457738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66728871.

The product of its digits is 211680, while the sum is 41.

The square root of 133457738 is about 11552.3910079256. The cubic root of 133457738 is about 511.0317929880.

The spelling of 133457738 in words is "one hundred thirty-three million, four hundred fifty-seven thousand, seven hundred thirty-eight".