3678128633 has 4 divisors (see below), whose sum is σ = 3679117668. Its totient is φ = 3677139600.

The previous prime is 3678128593. The next prime is 3678128639. The reversal of 3678128633 is 3368218763.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1011748864 + 2666379769 = 31808^2 + 51637^2 .

It is a cyclic number.

It is not a de Polignac number, because 3678128633 - 2¹⁶ = 3678063097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3678128639) 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, 488918 + ... + 496383.

It is an arithmetic number, because the mean of its divisors is an integer number (919779417).

Almost surely, 2^3678128633 is an apocalyptic number.

It is an amenable number.

3678128633 is a deficient number, since it is larger than the sum of its proper divisors (989035).

3678128633 is an equidigital number, since it uses as much as digits as its factorization.

3678128633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989034.

The product of its digits is 870912, while the sum is 47.

The square root of 3678128633 is about 60647.5773052807. The cubic root of 3678128633 is about 1543.6267802277.

The spelling of 3678128633 in words is "three billion, six hundred seventy-eight million, one hundred twenty-eight thousand, six hundred thirty-three".