33148138 has 4 divisors (see below), whose sum is σ = 49722210. Its totient is φ = 16574068.

The previous prime is 33148133. The next prime is 33148151. The reversal of 33148138 is 83184133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83184133 = 139 ⋅598447.

It can be written as a sum of positive squares in only one way, i.e., 19509889 + 13638249 = 4417^2 + 3693^2 .

It is not an unprimeable number, because it can be changed into a prime (33148133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8287033 + ... + 8287036.

Almost surely, 2^33148138 is an apocalyptic number.

33148138 is a deficient number, since it is larger than the sum of its proper divisors (16574072).

33148138 is a wasteful number, since it uses less digits than its factorization.

33148138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16574071.

The product of its digits is 6912, while the sum is 31.

The square root of 33148138 is about 5757.4419667071. The cubic root of 33148138 is about 321.2326738979.

The spelling of 33148138 in words is "thirty-three million, one hundred forty-eight thousand, one hundred thirty-eight".