2645454263 has 4 divisors (see below), whose sum is σ = 2645621328. Its totient is φ = 2645287200.

The previous prime is 2645454257. The next prime is 2645454293. The reversal of 2645454263 is 3624545462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3624545462 = 2 ⋅1812272731.

It is a cyclic number.

It is not a de Polignac number, because 2645454263 - 2¹⁶ = 2645388727 is a prime.

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 2645454263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645454293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56963 + ... + 92388.

It is an arithmetic number, because the mean of its divisors is an integer number (661405332).

Almost surely, 2^2645454263 is an apocalyptic number.

2645454263 is a deficient number, since it is larger than the sum of its proper divisors (167065).

2645454263 is a wasteful number, since it uses less digits than its factorization.

2645454263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167064.

The product of its digits is 691200, while the sum is 41.

The square root of 2645454263 is about 51433.9796535325. The cubic root of 2645454263 is about 1383.0357909179.

The spelling of 2645454263 in words is "two billion, six hundred forty-five million, four hundred fifty-four thousand, two hundred sixty-three".