2656397049 has 8 divisors (see below), whose sum is σ = 3728276640. Its totient is φ = 1677724416.

The previous prime is 2656396993. The next prime is 2656397069. The reversal of 2656397049 is 9407936562.

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

It is not a de Polignac number, because 2656397049 - 2⁷ = 2656396921 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2656396992 and 2656397010.

It is not an unprimeable number, because it can be changed into a prime (2656397069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23301672 + ... + 23301785.

It is an arithmetic number, because the mean of its divisors is an integer number (466034580).

Almost surely, 2^2656397049 is an apocalyptic number.

It is an amenable number.

2656397049 is a deficient number, since it is larger than the sum of its proper divisors (1071879591).

2656397049 is a wasteful number, since it uses less digits than its factorization.

2656397049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46603479.

The product of its (nonzero) digits is 2449440, while the sum is 51.

The square root of 2656397049 is about 51540.2468853225. The cubic root of 2656397049 is about 1384.9401198333.

The spelling of 2656397049 in words is "two billion, six hundred fifty-six million, three hundred ninety-seven thousand, forty-nine".