3996638133 has 4 divisors (see below), whose sum is σ = 5328850848. Its totient is φ = 2664425420.

The previous prime is 3996638131. The next prime is 3996638167. The reversal of 3996638133 is 3318366993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3996638133 - 2¹ = 3996638131 is a prime.

It is a super-2 number, since 2×3996638133² = 31946232732299451378, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996638131) 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, 666106353 + ... + 666106358.

It is an arithmetic number, because the mean of its divisors is an integer number (1332212712).

Almost surely, 2^3996638133 is an apocalyptic number.

It is an amenable number.

3996638133 is a deficient number, since it is larger than the sum of its proper divisors (1332212715).

3996638133 is a wasteful number, since it uses less digits than its factorization.

3996638133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332212714.

The product of its digits is 1889568, while the sum is 51.

The square root of 3996638133 is about 63218.9697242845. The cubic root of 3996638133 is about 1586.9562080517.

The spelling of 3996638133 in words is "three billion, nine hundred ninety-six million, six hundred thirty-eight thousand, one hundred thirty-three".