2605335381 has 16 divisors (see below), whose sum is σ = 4210643520. Its totient is φ = 1578990960.

The previous prime is 2605335377. The next prime is 2605335409. The reversal of 2605335381 is 1835335062.

It is not a de Polignac number, because 2605335381 - 2² = 2605335377 is a prime.

It is a super-2 number, since 2×2605335381² = 13575544894980830322, 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 (2605335301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4385790 + ... + 4386383.

It is an arithmetic number, because the mean of its divisors is an integer number (263165220).

Almost surely, 2^2605335381 is an apocalyptic number.

It is an amenable number.

2605335381 is a deficient number, since it is larger than the sum of its proper divisors (1605308139).

2605335381 is a wasteful number, since it uses less digits than its factorization.

2605335381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772193 (or 8772187 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 2605335381 is about 51042.4860385934. The cubic root of 2605335381 is about 1376.0088034425.

The spelling of 2605335381 in words is "two billion, six hundred five million, three hundred thirty-five thousand, three hundred eighty-one".