2605381633 has 8 divisors (see below), whose sum is σ = 2624086656. Its totient is φ = 2586696000.

The previous prime is 2605381609. The next prime is 2605381643. The reversal of 2605381633 is 3361835062.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2605381633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2605381592 and 2605381601.

It is not an unprimeable number, because it can be changed into a prime (2605381643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362313 + ... + 369433.

It is an arithmetic number, because the mean of its divisors is an integer number (328010832).

Almost surely, 2^2605381633 is an apocalyptic number.

It is an amenable number.

2605381633 is a deficient number, since it is larger than the sum of its proper divisors (18705023).

2605381633 is a wasteful number, since it uses less digits than its factorization.

2605381633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2605381633 is about 51042.9391101257. The cubic root of 2605381633 is about 1376.0169460643.

The spelling of 2605381633 in words is "two billion, six hundred five million, three hundred eighty-one thousand, six hundred thirty-three".