2613401649 has 48 divisors (see below), whose sum is σ = 4018520064. Its totient is φ = 1633737600.

The previous prime is 2613401641. The next prime is 2613401719. The reversal of 2613401649 is 9461043162.

2613401649 is a `hidden beast` number, since 2 + 6 + 1 + 3 + 4 + 0 + 1 + 649 = 666.

It is not a de Polignac number, because 2613401649 - 2³ = 2613401641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2613401641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3953379 + ... + 3954039.

It is an arithmetic number, because the mean of its divisors is an integer number (83719168).

Almost surely, 2^2613401649 is an apocalyptic number.

It is an amenable number.

2613401649 is a deficient number, since it is larger than the sum of its proper divisors (1405118415).

2613401649 is a wasteful number, since it uses less digits than its factorization.

2613401649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2613401649 is about 51121.4402085857. The cubic root of 2613401649 is about 1377.4274078542.

The spelling of 2613401649 in words is "two billion, six hundred thirteen million, four hundred one thousand, six hundred forty-nine".