2556268019 has 8 divisors (see below), whose sum is σ = 2709326880. Its totient is φ = 2403508096.

The previous prime is 2556268003. The next prime is 2556268031. The reversal of 2556268019 is 9108626552.

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

It is a cyclic number.

It is not a de Polignac number, because 2556268019 - 2⁴ = 2556268003 is a prime.

It is a super-2 number, since 2×2556268019² = 13069012369924368722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556268619) 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, 56999 + ... + 91440.

It is an arithmetic number, because the mean of its divisors is an integer number (338665860).

Almost surely, 2^2556268019 is an apocalyptic number.

2556268019 is a deficient number, since it is larger than the sum of its proper divisors (153058861).

2556268019 is a wasteful number, since it uses less digits than its factorization.

2556268019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149469.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 2556268019 is about 50559.5492365191. The cubic root of 2556268019 is about 1367.3156842894.

The spelling of 2556268019 in words is "two billion, five hundred fifty-six million, two hundred sixty-eight thousand, nineteen".