2654891863 has 16 divisors (see below), whose sum is σ = 3079673856. Its totient is φ = 2268493920.

The previous prime is 2654891861. The next prime is 2654891881. The reversal of 2654891863 is 3681984562.

It is a cyclic number.

It is not a de Polignac number, because 2654891863 - 2¹ = 2654891861 is a prime.

It is a super-2 number, since 2×2654891863² = 14096901608447221538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2654891863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2654891861) 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, 133945 + ... + 152482.

It is an arithmetic number, because the mean of its divisors is an integer number (192479616).

Almost surely, 2^2654891863 is an apocalyptic number.

2654891863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2654891863 is a deficient number, since it is larger than the sum of its proper divisors (424781993).

2654891863 is a wasteful number, since it uses less digits than its factorization.

2654891863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286494.

The product of its digits is 2488320, while the sum is 52.

The square root of 2654891863 is about 51525.6427713425. The cubic root of 2654891863 is about 1384.6784889735.

The spelling of 2654891863 in words is "two billion, six hundred fifty-four million, eight hundred ninety-one thousand, eight hundred sixty-three".