133657154 has 8 divisors (see below), whose sum is σ = 201318348. Its totient is φ = 66551040.

The previous prime is 133657133. The next prime is 133657159. The reversal of 133657154 is 451756331.

It can be written as a sum of positive squares in 2 ways, for example, as 133518025 + 139129 = 11555^2 + 373^2 .

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

It is not an unprimeable number, because it can be changed into a prime (133657159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138167 + ... + 139130.

Almost surely, 2^133657154 is an apocalyptic number.

133657154 is a deficient number, since it is larger than the sum of its proper divisors (67661194).

133657154 is a wasteful number, since it uses less digits than its factorization.

133657154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277540.

The product of its digits is 37800, while the sum is 35.

The square root of 133657154 is about 11561.0187267386. The cubic root of 133657154 is about 511.2861986194.

The spelling of 133657154 in words is "one hundred thirty-three million, six hundred fifty-seven thousand, one hundred fifty-four".